Include helpful debugging details for paste submissions

[jamo]

For example include

• OS version
• OS language
• Default encoding (utf-8 or something else)
• Java version
• NetBeans version, maybe
• TMC plugin version, maybe
• ENV hash

We need to add support to the server, but it should be easy.

And of course limit the availability of this information.

[mpartel]

Many of these are available from Java's System.getProperties().