WebSQRL improments (syntax/functions and index page)

[qix]

Problem

The syntax highlighting as C++ is confusing since many things don't match up.

Solution

I added super basic SQRL highlighting. Eventually it should be in the main package but this is fine for now. I also added cleaned up the index page, and added autocomplete/hover for the function list.

Result

Function discovery now works via autocomplete, and it's got basic documentation!

There's a bug where this gets registered multiple times, I don't know the correct way of doing this with Monaco/React. @meyer ?

[coveralls]

Pull Request Test Coverage Report for Build 3688307901

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 61.117%

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Totals
Change from base Build 3688049739:	0.0%
Covered Lines:	15779
Relevant Lines:	24079

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💛 - Coveralls