FL-1748: Modify PYTHON_COMPAT for net-libs/libsoup-2.48
FL-1748: Cleanup and update x11-libs/gtk+

- Removes 3.14.3
- Adds 3.14.4
FL-1748: Cleanup and update x11-themes/adwaita-icon-theme

- Removes 3.14.0
- Adds 3.14.1
FL-1748: Fork x11-misc/notification-daemon

- Mirrors 0.7.6
- Adds 3.14.0
FL-1748: Cleanup and update x11-wm/mutter

- Removes 3.14.1-r1
- Adds 3.14.1.5
FL-1748: Cleanup and update gnome-base/gnome-shell

- Removes 3.14.1
- Adds 3.14.1.5
FL-1748: Cleanup and update gnome-extra/gnome-boxes

- Removes 3.14.1.1
- Adds 3.14.1.2
FL-1748: Cleanup and update x11-wm/metacity

- Removes 3.14.1
- Adds 3.14.2
FL-1748: Cleanup and update gnome-extra/gnome-calculator

- Removes 3.14.0
- Adds 3.14.1