add support for apps to register alternative login methods
below the standard login a list of icons/button will be displayed
Make app icon linkable when enabling app.
Remove undefined crumb variable from home breadcrumb
Merge branch 'master' into fix_addNavigation
remove superfluous enabled-app class again
form detail on log in button, better shape
line up 'remember' text with checkbox
Remove superfluous append
Merge pull request #1460 from owncloud/login-button

Login screen details
Merge pull request #1429 from owncloud/fix_addNavigation

Make app icon linkable when enabling app.
new function \OC_Util::runningOnWindows()
setlocale test is pointless on Windows
Merge pull request #1452 from owncloud/fix-breadcrumb

Remove undefined crumb variable from home breadcrumb
Merge pull request #1469 from owncloud/no-setlocale-on-windows

No setlocale on windows
pass the argument to the ctor

Conflicts:
	lib/files/storage/temporary.php
spell check
disable error handler while running phpunit
Merge pull request #1471 from owncloud/temp-storage-call-parent-ctor-master

Temp storage call parent ctor master
Merge pull request #1474 from samtuke/master

Improvements to files_encryption
offer change password only when the action is supported by the user backend