GitLab

Fixes #9733

This adds a query to determine whether a MUC is semi-anonymous or
non-anonymous.

Currently, detecting a file drop on the roster window is not recognized
correctly. This fix avoids an Index error thrown after dropping a file
on the roster by checking if there is a selection before continuing.

Determine if we add a receipt mark inisde ConversationsTextview instead of in the ChatControl

graphics was always True, we only use it in add_info_message()

This helps to prevent confusion because there exist XEP-0359 stanza-ids which are not used here

Same code exists in the ChatControlBase.add_message() method already

The timestamp should be enough indication of how recent the message is

Add some methods to ChatControlBase to add status and info message to the ConversationTextview instead of going through
print_conversation() and print_conversation_line() which adds nothing to info and status messages

GUI code must not be aware of what integers map to connection states