pgsetting: Cleanup
pgsetting: Add IntArraySetting
Merge branch 'master' into settings_redesign
gui_plugin: Add tooltips for buttons
export_layers: Shorten menu item description
Cleanup
pggui: Use `get_filename()` if Location is active

In FileChooserWidget, if the filename entry next to the "Location:" label is visible (active), use the `get_filename()` function. This allows the user to choose the directory by typing it into the filename entry.
Merge branch 'settings_redesign'