Upon further reflection (i.e. a good night's sleep) we can probably pull this off with just beforeID.  Except I am going to call it insertBefore because it is similar nomenclature to the jQuery method.  In fact, I am going to paraphrase the jQuery documentation description as well because the purpose of this parameter is surprisingly difficult to describe without tying the sentence into knots:

`An id of an existing status bar indicator.  The new indicator will be inserted before (i.e. to the left of) the indicator specified by this parameter.`

Ugh.  Not great, but close enough.

The main side effect of only using insertBefore is that it is impossible to insert any indicator AFTER the space/tab indicator.  I think this is a **good** thing though.  It keeps the space/tab indicator in the lower right corner at all times.

We do need to decide, however, if we are going to prevent an insert BEFORE the "busy" indicator.  If so, I need to update the parameter documentation a little and tweak the code.  If not, we should be good to go with this next commit.