Add collision detection

[morinted]

• Very basic, just a new dictionary column
• Added dictionary name as a column
• Add button to show/hide dictionary columns
• Show # of results / total in filter pane
• Entry now holds reference to its StenoDictionary

[morinted]

Hello @Germanika and @sofa13 ... this begins some of the changes outlined in the meeting today. I'd like to merge this how it is before continuing.