Don't allow resizing the settings window
Pressing Escape in the settings form now closes it
Rename 'Cencel' buttons to 'Cancel'
Add a Search button to the Search form (previously only worked with pressing Enter)
Set the backcolor of the search form to the same color as the main form one and don't allow writing to it
Merge pull request #5 from Discover-/master

Miscellaneous GUI tweaks