made the widget movable

You can now move it to other bar.
An issue remain : when moved in new style mode do progress and image
text are stuck. It works again when ff is restarted.
I also renamed a few id as to make more sense.
cleaning
Merge branch 'master' of https://github.com/kustodian/extended-statusbar

Conflicts:
	chrome/content/extendedstatusbarFF29.js
	chrome/content/extendedstatusbarFF29.xul
http://stackoverflow.com/questions/6500786/fixing-gbrowser-addprogresslistener-was-called-with-a-second-argument-which-is
So it works in a new window.
Missing condition before applying the hiding pref, new style.
The title of the widget when put in the customization panel is hidden, it's a bug when the object displayed is very wide.
I did it with css. Also the way it start had to be changed so nothing is running when it's not in a toolbar.
A few customization css improvements.
When moved to the menu panel the item (i put a solid black border around it) is wrongly placed, i couldn't find why.