Internet access is block through Cisco 819 router

ip nat inside source route-map nat2cell interface Cellular0 overload
ip nat inside source route-map nat2wan interface GigabitEthernet0 overload

Some relevant configuration parts are missing, but if you changed IP address scheme in parts of configuration that are presented here like this:

ip dhcp excluded-address 10.5.50.1 10.5.50.100
!
ip dhcp pool LAN
 network 10.5.50.0 255.255.255.0
 dns-server 166.102.165.11 8.8.4.4
 default-router 10.5.50.1

interface Vlan1
 ip address 10.5.50.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly in

Check your route-maps nat2cell and nat2wan .
If you did not change those that is problem. You need to enable network 10.5.50.x to be natted instead of 192.168.1.0 network. Currently 192.168.1.0 is permited to be natted in those route-maps since that network range is able to go to internet.

Predrag,

Here is the full config, (with some of the Internet IP addressing changed for security reasons.)

Can you provide me with the exact syntax that I am missing in the commands?

I have indicated in the configuration below what lines I changed.  And only those lines.  But when I made those changes in the running-config and then refreshed my workstation IP's, they did pull an IP address of 10.5.50.x, but could NOT access the Internet.
 
I hope this clarifies in detail what I am needing help with.

thank you,

(the following is the full configuration of the Cisco 819 router)
!
! Last configuration change at 19:31:36 UTC Tue Nov 3 2015 by absadmin
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Dino-819
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
bsd-client server url https://cloudsso.cisco.com/as/token.oauth2
!
!
!
!
!
!
!
!
!
!


!
ip dhcp excluded-address 192.168.1.1 192.168.1.100
(the above line I changed to the following line in the running-config)
ip dhcp excluded-address 10.5.50.1 10.5.50.100
!
ip dhcp pool LAN
 network 192.168.1.0 255.255.255.0
(the above line I changed to the following line in the running-config)
 network 10.5.50.0 255.255.255.0
 dns-server 166.102.165.11 8.8.4.4
 default-router 192.168.1.1
(the above line I changed to the following line in the running-config)
 default-router 10.5.50.1
!
!
!
ip domain name kwikit.org
ip name-server 4.2.2.1
ip name-server 8.8.4.4
ip cef
no ipv6 cef
!
!
!
!
!
multilink bundle-name authenticated
!
!
chat-script lte "" "AT!CALL1" TIMEOUT 20
!
!
!
!
!
!
cts logging verbose
license udi pid C819G-4G-VZ-K9 sn FTX1928827L
!
!
username absadmin privilege 15 secret 5 $1$Vcvj$mEo039e8ijNypGa0/xc4w.
username gwik privilege 15 secret 5 $1$pUK2$OVvy.c3gT3gAnKnlfZ7S3/
username netadmin privilege 15 secret 5 $1$oUV4$v.6.L4lnjkM8VeYBR5zN51
!
!
!
!
!
controller Cellular 0
 lte modem link-recovery rssi onset-threshold -110
 lte modem link-recovery monitor-timer 20
 lte modem link-recovery wait-timer 10
 lte modem link-recovery debounce-count 6
!
track 10 list boolean or
 object 11
 object 12
 delay down 5 up 5
!
track 11 ip sla 1 reachability
!
track 12 ip sla 2 reachability
!
ip ssh version 2
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
 ip nat inside
 ip virtual-reassembly in
!
interface Cellular0
 ip address negotiated
 ip access-group WAN in
 no ip unreachables
 ip nat outside
 ip virtual-reassembly in
 encapsulation slip
 dialer in-band
 dialer string lte
 dialer-group 1
 async mode interactive
!
interface FastEthernet0
 no ip address
!
interface FastEthernet1
 no ip address
!
interface FastEthernet2
 no ip address
!
interface FastEthernet3
 no ip address
!
interface GigabitEthernet0
 ip address 173.91.4.25 255.255.255.248
 ip access-group WAN in
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto
!
interface Serial0
 no ip address
 shutdown
 clock rate 2000000
!
interface Vlan1
 ip address 192.168.1.1 255.255.255.0
(the last change I made was the above line to the following line the running-config)
 ip address 10.5.50.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly in
!
ip local policy route-map ip-sla
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip nat inside source static tcp 192.168.1.100 100 interface GigabitEthernet0 100
ip nat inside source static tcp 192.168.1.210 3391 interface GigabitEthernet0 3391
ip nat inside source static tcp 192.168.1.211 3392 interface GigabitEthernet0 3392
ip nat inside source route-map nat2cell interface Cellular0 overload
ip nat inside source route-map nat2wan interface GigabitEthernet0 overload
ip route 0.0.0.0 0.0.0.0 173.91.4.21 10 track 10
ip route 0.0.0.0 0.0.0.0 Cellular0 20
!
ip access-list extended WAN
 permit udp any eq bootps any eq bootpc
 permit tcp any any eq 3391
 permit tcp any any eq 3392
 permit tcp any any eq 100
 permit tcp any any eq 11990 12005
 permit icmp any any echo-reply
 permit tcp host 12.150.103.129 any eq 22
 permit tcp any any gt 1024
 permit udp any any gt 1024
 permit udp any eq domain any
 permit tcp any any established
 permit tcp host 172.14.35.46 any eq 22
 deny   ip any any
!
ip sla 1
 icmp-echo 8.8.8.8 source-interface GigabitEthernet0
 threshold 500
 timeout 500
 frequency 5
ip sla schedule 1 life forever start-time now
ip sla 2
 icmp-echo 4.2.2.2 source-interface GigabitEthernet0
 threshold 500
 timeout 500
 frequency 5
ip sla schedule 2 life forever start-time now
ip sla reaction-configuration 1 react timeout threshold-type immediate
ip sla reaction-configuration 2 react timeout threshold-type immediate
ip sla enable reaction-alerts
dialer-list 1 protocol ip permit
!
route-map nat2wan permit 10
 match ip address 101
 match interface GigabitEthernet0
!
route-map ip-sla permit 10
 match ip address 110
 set ip next-hop 173.91.4.21
 set interface GigabitEthernet0 Null0
!
route-map nat2cell permit 10
 match ip address 101
 match interface Cellular0
!
access-list 101 permit ip 192.168.0.0 0.0.255.255 any
access-list 110 permit icmp any host 8.8.8.8
access-list 110 permit icmp any host 4.2.2.2
!
control-plane
!
!
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
!
!
!
!
!
!
line con 0
 logging synchronous
 login local
 no modem enable
line aux 0
line 2
 no activation-character
 no exec
 transport preferred none
 transport input all
 stopbits 1
line 3
 script dialer lte
 modem InOut
 no exec
line vty 0 4
 logging synchronous
 login local
 transport input ssh
!
scheduler allocate 20000 1000
!
!
event manager directory user policy "flash:/"
event manager session cli username "absadmin" privilege 15
event manager applet pri_back
 event track 10 state any
 action 1.0 cli command "clear ip nat trans forced"
event manager applet sms
 event ipsla operation-id 1 reaction-type timeout
 action 1.0  if $_ipsla_condition eq "Occurred"
 action 1.1   wait 2
 action 1.2   syslog msg "Primary Circuit Down"
 action 1.3   cli command "cellular 0 lte sms send 8592306307 Dino Primary Circuit Down, 4G Active"
 action 1.31  wait 1
 action 1.32  cli command "cellular 0 lte sms send 5027519574 Dino Primary Circuit Down, 4G Active"
 action 1.33  wait 1
 action 1.34  cli command "cellular 0 lte sms send 5025482028 Dino Primary Circuit Down, 4G Active"
 action 1.35  wait 1
 action 1.36  cli command "cellular 0 lte sms send 8598067952 Dino Primary Circuit Down, 4G Active"
 action 1.4  else
 action 1.5   syslog msg "Primary Circuit UP"
 action 1.6   cli command "cellular 0 lte sms send 8592306307 Dino Primary Circuit Up"
 action 1.61  wait 1
 action 1.62  cli command "cellular 0 lte sms send 5027519574 Dino Primary Circuit Up"
 action 1.63  wait 1
 action 1.64  cli command "cellular 0 lte sms send 5025482028 Dino Primary Circuit Up"
 action 1.65  wait 1
 action 1.66  cli command "cellular 0 lte sms send 8598067952 Dino Primary Circuit Down, 4G Active"
 action 1.7  end
!
end

Predrag,
Thank you very much!  I completely missed seeing that ACL.  I very much appreciate it.

You're welcome.