Bug fixes, Romanian translation

6e22fa8 Replace assert with explicit check for valid URI
6de80b9 Catch exception when phone calling is not available on device
aeac962 Check if fragment is finished before using it
9afb7ca Romanian translation (thanks @ivantrasnitu)
8cddc76 Avoid infinite loop in permission checking on API 33
ade8c5c Fix for tinode/chat#869
92f3525 Fix duplication of entered text in onResume