Escaping name and desc properties before converting to HMTL

[krcb197]

This PR addresses some undesirable things that can happen with the legal system RDL format string but would result in undesirable problems in HTML. See the following issue tickets:

• Escape HTML content PeakRDL-html#53
• Triple quote in name or desc field krcb197/PeakRDL-python#169

There are two parts to this:

1. The systemRDL string is escaped with the builtin python html.escape function before conversion
2. The systemrdl [quote] and [/quote] constructs are converted to HTML as " rather than "

[coveralls]

coverage: 92.306% (+0.004%) from 92.302%
when pulling 4b4c74e on krcb197:escaping_html
into 3deb51b on SystemRDL:main.

[amykyta3]

See my comments in parent issue SystemRDL/PeakRDL-html#53
I cannot justify merging this change as-is. Perhaps just the 2nd part for RDLFormatCode [quote] and [/quote] tags.

[krcb197]

@amykyta3

Thank you for the review comments. I understand that escaping the HTML characters can not be the default behaviour.

I still think it may be helpful in some cases to clean the desc and name properties, I have resubmitted the PR with this as an optional behaviour (off by default). I discovered that the & is escaped by default when the markdown processor is applied.

Does that address your concerns?