Add "clear track" option, fix copying of tracks from song ed -> bb ed
- Tracks copied from song->bb will no longer be unusable
- Since doing this required creating a "delete TCOs from track" function, I also added the option to trackops menu to clear a track
Fix #757
Merge pull request #1005 from diizy/stable-1.1

Add "clear track" option, fix copying of tracks from song ed -> bb ed
Monstro: add newlines to helptexts
Merge pull request #1016 from diizy/gfx

Monstro: add newlines to helptexts
Fix bbtrack undo/redo bug
Fix #790
Merge pull request #1019 from diizy/gfx

Fix bbtrack undo/redo bug
Updated ZynAddSubFX instrument presets

Taken from upstream repository with HEAD at 7e14a008bdc671341843ea720ed.
configManager: save config every time recent project list is updated

fixes #1014
Merge pull request #1023 from grejppi/stable-1.1-recentlist

configManager: save config every time recent project list is updated
Merge pull request #1026 from LMMS/stable-1.1

sync