fix regression: add instrument
fix translation of fotomode context menu

and a better name for it
fix translation of error message reg. tuplet split

when changing timesig
fix typos and change from "8th" to "Eighth"

for consistency with other "Eighth"
fix typo by changing V_EIGHT to V_EIGHTH
fix translation of file related error messages
fix translation of pitch2string, for drum- and pianoroll
fix translation of pitch2string, for editdrumset

Is the code duplication with awl/utils.cpp really needed?
fix translation of staff type group names
fix typos in gpDrumset