Swing functionality with UI for controlling swing added

Changed default value of swingRatio and added spacers where necessary

Optimized call to get swing ratio

cleaning up UI

Cleaning up UI further..

Size of spin boxes fixed

Using qreal instead of double

Swing functionality with user controlled swing ratio implemented
Addded tests for swing

Swing tests working now

Tests for swing added
Removed compareDump

Renamed test files

Removed compareDump and renamed the test files
Support for the fade articulation in fonts, and import in GP4 and GP5 formats
fix warning reg. unused but set variable

introduced in 9d21431c
fix warning reg. unused variable

introduced in 11b9481
fix #27081
New GM Pipe Organ Instrument

A response to this post on the forum: http://musescore.org/en/node/27106
a simple GM Pipe organ has been added to
instruments.xml and the old Pipe Organ which controlled Aeolus has been
renamed to Aeolus Organ. This is part of the preparations required for
the removal of Aeolus should we fail to resolve issues with Fons
Adrianssen.
fix #22132
comment non working test
fix #23667: adjust canvas position when adding title et al
change slur implementation to handle slurs to/from grace notes
fix slurs/parts/grace notes
update mtest
fix warning CMP0045 with Cmake 3