Added possibility to change ownCloud storage folder.
Update management.xhtml

correct spelling
Added default storage folder, if no storage folder preference exists.
Moved storage folder preference to the bottom of the settings dialog.
Corrected the translations.
Added install introduction.
Fixed the install introduction in the readme.
Merge pull request #1 from thokon/patch-1

Update management.xhtml
Corrected spelling.
Merge pull request #1 from valentinz/master

Added possibility to change ownCloud storage folder.