WoW Classic - The Burning Crusade support

[torkus]

• [x] config files convert old compound game tracks back to a regular game track + flag
• [x] gui, checkbox for switching flag on or off
• [x] import+export, switch to lenient mode when importing
• [x] can game track labels be shortened?
• [x] don't truncate 'strict' flag
• [x] gap between strict toggle and game track is a few pixels too narrow
• [x] update README
• [x] review
• [x] update CHANGELOG

[torkus]

[torkus]

"welcome" screen with disabled widgets when no addon dir selected. I got tired of writing tests :)