Added Stack Overflow client/secret fields.
Added stackexchange oauth.
Added public Key.
Fixed soverflow_authorized.
Remove stackoverflow email.
Tweak stackoverflow color.
Rename soverflow > stackoverflow.
Update signin button to new convention.
Fixed rebase error.
SO moved to the end of buttons list.
Sorted oauth fields of admin form by alphabet.
Catch only specified exception and simplify code.
Merge pull request #21 from gmist/errhandler_simplify

Catch only specified exception and simplify code.
Font Awesome updated to 4.0.3
Merge pull request #16 from gmist/stackoverflow

Stack Overflow oauth
Reorders and stuff
Merged with gae-init