Indecision is a GNOME Shell Extension which provides the ability to Drag-n-Drop indicators within the GNOME shell panel, as well as hide indicators.
The extension stores a state file, which is used on startup to arrange indicators to the user-specified position within the panel, as well as to hide any indicators previously marked to be hidden.
This extension also provides a menu for disabling/enabling installed extensions for easy access.
GNOME Shell
I have only tested with GNOME Shell v3.2.2.1
No special installation instructions; installation is the same for any other GNOME Shell Extension
