+ Hints for track properties' columns and the whole track list
+ App caption, form caption and About text use app version and CPU architecture
! Added URLs to About text (closes #4)
! Fixed #1: Lang combobox doesn't modify property
! File path edit widened
! "Unsaved changes" MsgBox on close: buttons were messed
+ Remove string properties (Name, Lang) from file if they're empty
! If track flags are not set, assign default value and mark the flag modified so it will be changed on save (resolves #3).
! Fixed empty lang assignment