add a reminder to change assertion to popup window when gui is ready in parse.py
Add parser draft for pravda com ua
Add an item into todo list
add parser draft for www ukrinform ua
change Text widgets in search options to Listbox widgets
write gui functionality to add a rubric and update search options

Add Rubric class with name, sites and keywords (kw) fields.
Write a add_rubric method which adds a button to the rubrics frame
Write a display_rubric method which (currently) updates the search options when one
presses the rubric button
write parsing functionality into gui for a single rubric (economics)

Write the first full functionality for a single rubric in the gui.
Modify parse.py along the way to achieve interface compatibility