Fix replay import
Abstract away model-filemodel and add mutable stores
Collapse visual settings by default in player
Also removes unnecessary background texture (the actual storyboard background spec wasn't implemented correctly anyway).
Update framework (and fix left/right arrow control of textboxes)
Also moves delete and action logic to a shared implementation
Restore nunit ruleset + waveform test cases
Update framework with GameThread fixes
Fix drag handling in line with framework changes
Fix pressing escape quickly unexpectedly exiting gameplay
Fix ApproachRate not inheriting OverallDifficulty when it is undefined