Fix uninitialized bar indexes
Fix tuplet range for on times quantization
Update Q_ASSERT messages (function names)
Fix non-tuplet chord bar indexes that go to the next bar
Improved human performance detection function
Fix chord bar indexes (set them after tuplet search)
More accurate back tied tuplets handling
Refactoring of check: does chord belong to this bar
Fix pending non-tuplets adding when tuplets are erased
Adapt tuplet detection for human performances
Improve isHumanPerformance function
Eighth basic quantization value for human-performed files
Add test for human performance 4/4
Prepare human beat functions
Add Beatroot code by Simon Dixon for beat detection in MIDI files

1. Passing of objects by values into functions
   were replaced by passing them by reference, where it is worth it.
2. Code style was reformatted according to the MuseScore style

Reformat Beatroot code style

Conflicts:
	mscore/CMakeLists.txt
	mtest/CMakeLists.txt
Fix fillBeats function (Beatroot): no interpolation between 1st and 2nd beats
Make the scope of local variable more narrow (Beatroot)
Integrate Beatroot (beat detection) algorithm into MIDI import
Don't remove short notes after quantization, adjust them instead
Notation simplification functionality for MIDI import