ParDescr is a struct, not a class
don't compare pointers against NULL in C++11

either avoid it like done here or use nullptr
use correct format specifiers

%d rather than %ld for int resp. %hhd vs. %d for char
add int to string the Qt way
disable bindings completly

not just the content
disable unused private members
disable unused local variables
initialize variables
avoid unused variable (and code) in RELEASE mode
disable unused local variables
fix overloading
remove some unneeded '\n'

and also fix a typo
fix #26046: add Valenican

Todo: On the update translation server
•Modify languages.txt
•rm share/locale/details.json
Fix #21927 - Added support for fret diagrams in Guitar Pro
fix #26091: correct tick for staff text & symbol
fix meaningless typo, hoping travis failure was glitch
Support for fret diagrams in the GPX format
Added missing solution file
fix #26381: playback of noteevents on tied notes
re-articulate first note of tied-into ornament