GUI won't start because of import errors

[shashwatsridhar]

After the recent merge of a pull request, the GUI fails to load due to an import error. The issue is in the order of imports in the gui/__init__.py file, wherein all the individual widgets of the GUI should be imported before the main class KiloSortGUI and the launcher function launcher.

This also points to the need for tests for the GUI, so that such issues don't arise in the future.

Thus, immediate todo:

• fix import error

Further goals

• Setup tests for the GUI which check for basic functionality - does the GUI load, does the GUI close uneventfully? (smoke tests)
• Add tests which mimic GUI interactions using such tools