clean templates
adjust the SATB closed score templates' ranges

to match instruments.xml, the higher voices defining the max. pitches,
the lower voice defining the min. pitches
Merge pull request #1227 from Jojo-Schmitz/templates

adjust the SATB closed score templates' ranges
Revert "adjust the SATB closed score templates' ranges"
Merge pull request #1228 from ChurchOrganist/revert-1227-templates

Revert "adjust the SATB closed score templates' ranges"
restrict move-right/move-left to current measure
update languages
Fix vocal ranges

Fix vocal ranges in instruments.xml and some choral templates
Merge pull request #1229 from ChurchOrganist/FixVocalRanges

Fix vocal ranges
fix translations using unicode
Merge pull request #1230 from Jojo-Schmitz/translation

fix translations using unicode
Squared > Rounded icon
revert connect to HTTP, needs more testing
Merge pull request #1231 from thomasbonte/newdesign3

Squared > Rounded icon
fix #30826
fix #15746
fix #29911
fix #2205
fix #30906
fix #30986: Updated locale_<lang>.zip files are not getting deleted after unzip