Merge pull request #3 from alexclp/master

Fixed null error newsdatasource
loading groups
merge conflicts solved
fb login
g+ and facebook login work at the same time :O
FB LOGIN FUCKING WORKS
added fb login button
saving groups in CoreData
moved files
new controller added
getting group in newssourceviewcontroller
unique groups and sources now
showing data in newsourceviewcontroller
deselecting row
initial ecslidingview controller
small change
sliding menu works
menu view cell done
added sliding navigation button
removed flatuikit