Fix 20405: in TAB's, small notes collide with staff lines.
Merge pull request #251 from mgavioli/Fix_20405_TAB_small_notes

Fix 20405: in TAB's, small notes collide with staff lines.
TAB: the length of beam partial segments was wrong (too long for down-stems and too short for up-stems)
add tuplet properties to inspector
Merge pull request #252 from mgavioli/TAB_lenght_of_beam_partial_segments

TAB: Lenght of beam partial segments
TAB: edit staff type dlg box.

Re-order controls.
Correct enabled/disabled dependencies of "Stems above/below" from "Stems through"
Merge pull request #253 from mgavioli/TAB_edit_staff_type_dlg_box

TAB: edit staff type dlg box.