Sign In tab completed without colors or images
needed to change file names to make things make more sense
mostly complete login/signup without backend support
completed login/signup views UI, still needs backend
login page fixed with AutoLayout and beginnings of following view controllers
async login complete
complete async server calls
first commit
complete login but waiting on sign up backend, also collection view cell complete
Merge branch 'registration' of https://github.com/givery-technology/Attache into registration

Conflicts:
	iOS/Attache.xcodeproj/project.pbxproj
	iOS/Attache/Seminar.h
added AIKeychain and other data model changes
icons and stock images included
data capable feed
feed can now use data
modularized cell view in feed, takes data as well.
feed now loads images asynchronously, also I think I got caching to work as well. Refactored cell view.
Scroll down to refresh implemented
many changes: photos load automatically and in right definition, seminar/company models complete
feed is complete
final commit from me for registration and feed, all small details handled.