More variables for better code compression

[RunDevelopment]

This PR adds new temporary variables to some language definitions so the minifier can better compress the code.
Usually, this only saves about 100~200 bytes or so.
In the case of textile, we actually save about 0.6kb or about 16% of the minified file.

This also fixed the namespace pollution introduced by django.

This PR deals with syntactic changes only. If you spot a semantic change, please tell, that's a bug.

[mAAdhaTTah]

One minor change, but if it produces a size savings, it seems reasonable to me.

[RunDevelopment]

@mAAdhaTTah

Variables are now assigned on a separate line.

[mAAdhaTTah]

@RunDevelopment I'm sorry, that's the opposite of what I intended. I think I confused you because I commented on a line that was correct, not one to fix. My apologies for that.

To be clear, I like assign the variable as well as to Prism.languages.language all on one line, the way you had it. When I saw it, I commented, intending to say "let's do it this way", fixing the ones that were on two (specifically asciidoc, and if there were others that I hadn't gotten to yet).

Sorry about that!

[mAAdhaTTah]

One other question.

[RunDevelopment]

@mAAdhaTTah
Hahaha. Happens to the best of us.

[RunDevelopment]

@mAAdhaTTah
Ok done.

Unrelated: Maybe we should expand the tests for django. I just made a mistake messing up the language definition a little. It wasn't detected by the tests...

[mAAdhaTTah]

Unrelated: Maybe we should expand the tests for django. I just made a mistake messing up the language definition a little. It wasn't detected by the tests...

This would be great. You should be able to add additional tests in a separate PR without conflicting with this one.

[mAAdhaTTah]

This looks good to me. A little concerned about introducing a lot of conflicts merging this. There's a PR for plsql I think that will be rough to land after this.

[RunDevelopment]

That's right, we should land #1501 before this.

[RunDevelopment]

Using a little copy function, I compressed AsciiDoc even further. This should also be a plus in terms of maintainability.

[mAAdhaTTah]

@RunDevelopment If we resolve these conflicts, I'll give this a final review and get this in.

[RunDevelopment]

Done.
Django is now left unchanged.