Merge pull request #228 from BronyBorn/master

Fix for app installer sending array instead of string.
Added $format = 'ext' option to Image::resize() which preserves the original image format
Merge branch 'master' of github.com:jbroadway/elefant
Fix for Image::resize() and filemanager/photo helper
Limited form autofocus to admin pages only
Improved folder discover in Zipper::find_folder()
Fixed acl checks in ./elefant crud-app output
Added install and upgrade handlers to ./elefant crud-app output
Added missing jQuery UI to admin/util/datewidget helper
Added separate admin/editable handler so you can more easily control where the edit buttons appear in a template
Added missing mkdir
Added missing mkdir
Fixed file inputs that were hidden by jquery.filedrop
Added dimensions to filemanager/photo edit hover