Added "Reload All" alternate menu item and keyboard shortcut (Option+.).
Closes Issue #44: Task selections are lost when file is reloaded.
Closes Issue #45: Changing color preferences does not take effect until files are reloaded.
Closes Issue #46: Changing font preferences does not take effect until files are reloaded.
Added trigger to refresh task list colors whenever user changes colors in the colorwells in the Preferences window. Addresses Issue #45.
Merge branch 'feature/refresh-all' into develop