Bug1008321 plugincheck not working in fx aurora up

r? Ignore the first couple of files, the interesting bits are in plugincheck_ui.js

Some things to note:

1) I use version sniffing, not cool I know but, if anyone can direct me at a feature detect that will get me the same, accurate result, I am definitely happy to switch.
2) If you compare the results shown in release and then beta/aurora/nightly and see no unknown results in the latter, this is a feature. As part of the discussions that happened in https://bugzilla.mozilla.org/show_bug.cgi?id=956905 it was decided to only report on plugins we know. (good or bad, it is what it is for now but, it does warrant further discussion)

Now for testing this. I have done the following tests:

## Beta, Aurora and Nightly on Max OSX 10.9.2

* Adobe Flash 13.0.0.206
* Google Talk Plugin 5.3.1.18536
* Java Runtime Environment Java 7 Update 55
* QuickTime Plug-in 7.7.3
* Silverlight Plug-In 5.1.20913.0

## Nightly on Windows 7

Java 8u5

## Nightly on Ubuntu

No Java, using IcedTea plugin

# Regression testing 

## Fx Release and IE 10 on Windows 7

Java 7u55

## Firefox 24 on Ubuntu

No Java, using IcedTea plugin

# How to test

* Clone the repo ;)
* In the root dir startup an HTTP server of some shape or form (I use the on that comes with Python)
* Point your browser to 127.0.0.1:8000/tests/plugincheck.html