Improved Hunspell Options page
- Added tooltips to the different dictionaries to describe their usages.
- Made the Dictionary field read-only. This can only be changed using the file selection dialog.
- Added logic for first time setup to create a custom name for the user dictionary. The user can then change this if needed (this will help 1st time users if they do not care about re-using a user dictionary, reduce some complexity). The Auto populated directory will be in the User Resource Path (on windows this is %APPDATA%/QtProject/). This closes #16.
Removed commented out code