update to instruments

Added string section instrument to address the concerns raised in
http://musescore.org/en/node/21072
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
Typo in Inspector for dynamics
Merge pull request #411 from Jojo-Schmitz/typo

Typo in Inspector for dynamics
fix linking of QRC file
make new created timesigs in masterpalett persistent; fix #15580
fix #18336
fix #18308
fix save of fermata timestrech
fix #21867: Foto mode > Save As does not recognize uppercase file extensions
fix #21863: Print command causes crash
remove export EPS and PS, change fotomode dragmode to SVG
Fix for Issue #21852

MuseScore MIDI meta-events are conflicting with MMA definitions: See
http://musescore.org/en/node/21852 for full details.
new style parameter multiMeasureRestMargin; fix #2834
Merge pull request #412 from ChurchOrganist/MIDI-meta-event-change

Fix for Issue #21852