Merge branch 'feature/rotation' into feature/LR

backend/Pianos4.php

js/pianos4.js

js/pianos4_tool_TPS.js

js/pianos4_tool_edit.js

js/pianos4_tool_minutia.js

js/pianos4_tool_review.js

js/pianos4_tool_ridge.js

js/pianos4_view.js

js/shared.functions.js