Removed unused variable.
Renamed several update functions so that what they do is clearer.
When enter is pressed in the address bar, the message is now handled directly, instead of been sent back to the main window.
- Updated and renamed SetComboBoxExTitleString.
- Grouped address bar functions together.
- Added const qualifiers.
- Simplified column import code.
Replaced direct array size references with SIZEOF_ARRAY. Closes #3.
Replaced direct call to sizeof with SIZEOF_ARRAY.
Updated license file name in header. Original rename operation was in 7af3a74d24f6dbd744bb17ad92a8f9ddcccb7af5.