Improve panel options menu entries
Summary:
- Move "Panel Options" context menu items out of submenu
- Rename "Configure Panel..." option
See M144, T10047, T10190. This makes the panel customization options much more discoverable.
Test Plan: Open the panel context menu.
Reviewed By: Plasma, VDG, mart
Subscribers: davidedmundson, ngraham, VDG, kde-frameworks-devel, Plasma
Tags: Frameworks
Maniphest Tasks: T10190, T11094, T10402
Differential Revision: https://phabricator.kde.org/D23951