Deleting saved repos when deleting user account/ storing separate lists for each user should now be working. Changed login code so that it doesn't care about upper/lower case (since github doesn't). Specifically I set it so we always convert input from the username field to lowercase (so we don't have to do toLowercase() comparisons everywhere else).
Polished up the Login screen.
Changed name from LoginActivity to Login and added the logo.
-Renamed GitLogin to GitFunctionality
-Rewrote the whole Git functionality. It is now a singleton, this makes it easier to use and should reduce the number of calls to github.

Right now it can find the repositories but they are not displayed properly.
Fixed a bug in the Authentication.
-Changed getRepo so it returns a list of repositories instead of just the names.
Fixed login screen and removed top bar from all screens.
-Fixed the repoList in mainActivity to work with the new gitFunctionality.
Merge branch 'master' of https://github.com/Sajfer/EDA397-Group6

Conflicts:
	app/src/main/res/layout/activity_login.xml
Implemented a basic commit msg listview
Added Encrypter class
Merge branches 'gitrepocommits' and 'master' of https://github.com/Sajfer/EDA397-Group6
Integrated my stuff and Johan's stuff with the latest master branch, + made some small fixes. Major overhaul to sharedpreferences so delete any old data from the app (removed everything to do with current/currEdit, since we always want to check if the account is still valid/if the GitFunctionality singleton is still alive). Switching between viewing repos/commits on repo works perfectly.

New stuff I have added is mainly encryption + adding back the code to retrieve related organization repos as well.

BUGS:
No way to log out (except back button). Pressing hardware menu button crashes the app (previously it would activate the menu button on the activity bar).

Some parts of Johan's code is commented out, affecting logged messages/ text shown in repo commits list. Basically any calls to RepoCommit.getCommiter crashes with a nullpointer, but getCommit works.