VoteSource Canvasser

Fixed issue when accepting terms and conditions, in some odd scenarios, the app got back to the login screen
Fixed issue when accepting terms and conditions, the app was freezing for if the internet connection wasn't good
Fixed issue on telling constituent search on multiple polling district.
Fixed issue on telling, when the user navigate between history and search, there was some odd scenarios that the app got stuck into a loop between those two pages.
Performance and security improvements.