Remove unit after zero
Remove overqualified elements

I used http://csslint.net/ to discover such errors
Use font shorthand format where ever possible
Fix issue overlong lines in <pre> blocks should not wrap

Close #8
Close #58
Hide code line numbers on smaller screens
CSS Literal class for reST matches code element style

I missed few rules last time.
Update release notes and thanks file
Do not show scroll bar in line number column
Change width of email button so that it retains its size of smaller widths
Set vertical align property of table cells
Update release notes and thanks
Add support for Latex

Close #36
Add support for article metadata article.modified_date

Close #20
Change modified_date metadata to modified

My [pull request](https://github.com/getpelican/pelican/issues/1152) got
closed in favor of [1148](https://github.com/getpelican/pelican/pull/1148).

This means Pelican is going to use `modified` keyword instead of
`modified_date`.

This patch reflects this change in Pelican.
Articles list on tags list page should be sorted in descending order

Close #34
Update release notes and thanks file
Fix regression that will not sort tags list

Close #34