Python: fix crash at end of file and timestamp

The timestamp flag for using the log format was not being
processed correctly. Now timestamps work for overo format
and not.
Python: logivew.py handle timestamped flag better
Python: uavtalky.py remove semicolons and handle multi-inst
Python: add test.py and shell.py

Shell.py is the previous test.py and now test.py is something
that jenkins can test.