Display filter edit updates.
Have the bookmark button operate on saved display filters, similar to
the "Filter:" button in the GTK+ UI. Expose the saved display filter
list via a popup menu.
Update the display filter icons. Make the "Apply" button wider. Remove
the old icon assets.
Add a StockIconToolButton class along with note explaining why it's
necessary.
Rename the "Filter Bookmarks" preference to "Filter Shortcuts".
Suggestion for a better name are welcome.
Change-Id: I0082d3f01b017253fa75e51cbff9beb17c41a209
Reviewed-on: https://code.wireshark.org/review/10390
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>