possible fix for 5591 (show elements after re-adding them)
fix typo
move mixer-metric pattern to the left
use ArdourMono font for metric patterns
add a stripe-pattern to the meters
meter metrics: ignore global font-scaling
don't hide ticks in narrow mode
revert to right-side mixer metric-labels
mixer metric background color fix (MIDI & inactive)

fixes http://tracker.ardour.org/view.php?id=5594
reset meter when meter-point changes
adjust meter-width when configuration changes

fixes http://tracker.ardour.org/view.php?id=5592
update processor-name (short|long) when mixer-strip width changes
Wrap calls to add_shortcut_folder() in try { ... } block.

Gtk::FileChooserButton::add_shortcut_folder() throws a Glib::Error
exception if the folder being added already has a shortcut, causing the
'New session' dialogue to appear empty when choosing 'New...' from the
Session menu. This happens if Ardour's default session folder is
set to a location that has a standard shortcut in the Gtk file chooser,
e.g. the user's home directory, desktop, &c.

Catch the exception in ArdourStartup::setup_new_session_page(), so that the
'New session' dialogue appears as expected, and likewise in
ARDOUR_UI::open_session() to avoid a similar problem there.

Fixes #5591.
re-nice rendering of channel-splitting icon
Revert "Revert new meter types (postponed until after 3.3 release)"

This reverts commit d80f672e8487f459d76ab291958bffcded08f0fd.
implement new meter types
minor tweaks to meter-names and legend
restore session backwards compatibility to 3.3
meterbridge metrics update:

* display metrics for every used meter-type
* show metrics between meters with differnet types
* update text and label alignment for meterbridge
* fix crash when deleting metrics-strip (zero route)
* clean up metric pattern code (use float for dBFS)
fix #5609 (import with 1 track per channel mis-associates tracks + channels)

when using ImportDistinctChannels, correctly name regions so that playlists for each channel/track
are also named differently, and thus reloaded properly when the session is reloaded.