Remove meta.tag.any.html

[winstliu]

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions

Description of the Change

meta.tag.any.html is a useless pattern that only matches when there is no space between the begin and end tags. It is not used by autocomplete, and meta.tag.other.html matches that pattern just fine. I have also replaced all the other .any's with the actual tag name, meaning meta.tag.structure.any.html is now meta.tag.structure.div.html (or equivalent). Finally, snippets are now prevented from showing up when against an opening tag.

Essentially, it is a lighter version of #93.

Alternate Designs

None.

Benefits

Grammar cleanup and finer-grained scopes.

Possible Drawbacks

This will require autocomplete-html to recognize the new meta scopes before it can be merged.

Applicable Issues

Fixes #25
Supersedes and closes #93