Provide "poor man's" JS/CSS features in Community Edition

[Scott Wells]

Now that I've added better support for Lightning, the lack of support for JavaScript and CSS in IntelliJ IDEA Community Edition is even more apparent. I can add a reasonable level of support for Community Edition users by presenting symbols from the standard JavaScript API, the BOM/DOM API, and the automatic includes for Visualforce and Lightning respectively. Similar with CSS, especially the Lightning Design System classes. These wouldn't be contextually-aware completions, but they should save quite a few keystrokes. I can also implement simple syntax highlighting based on Community Edition's custom file types for JS/CSS, and I can provide brace matching, quote matching, simple auto-indentation (ENTER between braces) that will make JS/CSS editing significantly more pleasant in Community Edition.

[Scott Wells]

Partially delivered in 1.7.1.3.

[Scott Wells]

More of this delivered in 1.7.1.4:

• Significantly improved JavaScript symbol table creation.
• Support for standard Visualforce, Salesforce1, and Lightning/Aura JavaScript class/function libraries.
• Support for Visualforce and Lightning script and stylesheet includes.
• Multi-lang commenter for JavaScript and CSS within Visualforce and Lightning.
• Backspace handler for paired braces and quotes in JavaScript and CSS.

[Scott Wells]

I've probably delivered most of what I can on this one now.