Accessible dialogs.

Added screen-reader feedback
Did tabbing orders and focus policies
Fix inspector focus shiftings
Fix #29946 - Input via mouse in TAB's disrupts inpur cursor position
update guitar pro test files
Starting playback while in entry mode should exit entry mode.

Currently, starting playback while in entry mode does not leaves entry mode on, even if entry is actually impossible during playback.

In addition, when playback stops, entry mode (which is still on) is not stable and lacks an input cursor.

This fix shuts down entry mode altogether when starting playback.
Merge pull request #1152 from andreituicu/accessible-dialogs

Accessible dialogs
fix typo
fix another typo
Merge pull request #1163 from mgavioli/Fix_29946_input_cursor_wrong_after_mouse_input_on_tab

Fix #29946 - Input via mouse in TAB's disrupts input cursor position
Merge pull request #1164 from mgavioli/Starting_playback_exits_entry_mode

Starting playback while in entry mode should exit entry mode.