Renamed appmsg keys for task notes to conform Google's
tasks: free mem on reload; getCount method
js: convert bool to int before sending

Bool gets sent as a string...
statusbar: duplicate message to buffer

This must fix problem with messing statusbar text
js: using 'in' for assertion check of message field existence

This must fix problem when displaying the first list (id=0) causes error
message.
comm: support loading tasks (testing needed)