Changes in this patch:
* GCLI gave up with testing via phantomjs a while ago, but the docs didn't keep
up, so this fixes the docs.
* gcli/languages/command isn't used in Firefox, but on the web if a converter
wrongly produces a null DOM node, then the UI just looks blank, so this change
makes the error more obvious. However we don't use this in Firefox. I'd like to
remove the module, but not in this patch.
* The delegate type (used when we want to defer the type of a parameter, e.g.
with "pref set PREFNAME VALUE" where the type of value depends on PREFNAME)
forced children to be prediction-less. This allows them to decide for themselves
* The file type assumed that the local filesystem was the same as the remote one
which is clearly wrong. The change to gcli/types/file fixes that.
* Typo fix to gcli/util/util
* On very slow connections gcli/cli.js could get in a pickle where 2 changes
happened out of order. We've planned for this, but got in wrong, so this just
adds a bit of defensive programming.
MozReview-Commit-ID: H88W5UDCikM
68ab89e5b3