update to instruments

Added string section instrument to address the concerns raised in
http://musescore.org/en/node/21072
fix selection of overlapping notes
add new style parameter 'barAccidentatalDistance'
fix problem with note head direction
fix import of reduceable time sig
small optimization
update mtest
Multiple voices option in midi UI
Fix max level between in meter
Meter: tests and fixes
Test scores for tuplets and meter
fix demo plugins to use newCursor instead of QML elements
Merge pull request #410 from trig-ger/midi_import

New tests and fixes for tuplets and meter
make travis build less verbose
do not install debug dll of qt quick modules on windows
fix notehead position of whole notes
fix #21835
fix #20869
fix alignment in edit style, barline accidental distance
Merge pull request #402 from ChurchOrganist/instruments.xml-update

update to instruments