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.
Disabled menubutton (and back button in login). Removed watch? checkbox. Added some stuff around the getorganization repos code, which should hopefully  stop it from crashing on users that don't have orgs.
Merge.
Merge.