Added ability to change options with a configuration file.
Changed global variables to use config file

All global variables that used to serve as configuration options now use
the config file settings instead. All default settings can be changed in
config.py
Changed more global vars
Files in base plugin dir are now included

Any plugins in the base plugin directory will be added to a new menu named
"Plugins". Any folders will still create their own menu in the toolbar.
Allow importTools to use a list of plugin dirs
Config now accepts ',' seperated lists. More exception handling while importing plugins as well