toolbar: add a F10 keybinding for the gear menu

F10 should activate the gear menu, or there's no way to get to it using
the keyboard.

https://bugzilla.gnome.org/show_bug.cgi?id=680568
Updated Norwegian bokmål translation
Updated Telugu Translation
Updated Spanish translation
Updated Hungarian translation by Bence Lukacs <lukacs.bence1 at gmail dot com>
Updated Norwegian Nynorsk translation
Updated Norwegian Nynorsk translation
Updated Norwegian Nynorsk translation
Updated Galician translations
Updated Arabic translation
Use window-close icon instead of list remove in query editor
Make query editor buttons raised
Make search location buttons linked
Fix the box styling of the query editor rows
Revert "Add support for a column that combines atime and mtime"

Unfortunately we can't really support this right now, as the atime we
retrieve is mostly a lie.

This reverts commit 85a1b463bfb89c79064059cd3fbaeeeb8775ba89.
eel: don't use GDK_THREADS macros

Use the function equivalents.
window: make gear-menu a window action instead of an app action

Otherwise clicking on the gear menu will activate it on every window at
the same time.
Updated Slovenian translation
Remove access time column

We can't ensure this value is accurate.
Remove ctime and date_permissions

These are unreliable or unset