OC-1128: Create new layout for loading dialog
OC-1129: Add LoadingDialog.java
OC-1130: Change the old dialog by the new dialog.
Merge branch 'develop' into fix_loading_dialog_crash
Merge branch 'develop' into fix_loading_dialog_crash
Changes from comments of PR
Merge pull request #263 from owncloud/fix_loading_dialog_crash

Fix loading dialog crash