reorder issue template

#1415 - semi transparent checkmark in checked checkbox image

Change overlay synced icons

Merge pull request #1688 from owncloud/1628_prevent_that_upload_delayed_waiting_Wifi_notifies_an_error

Prevent that uploads delayed waiting for Wifi are shown as failed uploads

Removed classes for compatibility of notifications with Android API level lesser than 14, not supported any more

Prevent that upload-in-progress notification is shown for instant uploads unless they are really performed

Prevent that files sent to OC from other apps are duplicated in local storage

Make readme/repository more attractive for contributors

Added beta version