Since postcss tries to preserve specificity of selectors which
are defined in in a group, a `:not(#does-not-exist)` selector
was added to the non ID selectors (solutions-page and case-study-page).
This caused the CSS styles to override other styles due to
unexpectedly increased specificity.
To fix it, we remove the ID selector `#why-zulip-page` from the
group.
Removes the default title element of "Zulip" from `base.html` and
the default meta-description sentence from `meta_tags.html`. Also
removes default open graph metadata.
For portico templates that would would fail tests, set both
`PAGE_TITLE` and `PAGE_DESCRIPTION` variables with appropriate
content.
Co-authored-by: Alya Abbott <alya@zulip.com>
Renames existing template variables starting with `OPEN_GRAPH` to be
either `PAGE` or `PAGE_METADATA` since these variables are used for
adding both open graph metdata and page titles/descriptions for SEO.
Aman Agrawal
Alya Abbott
Alex Vandiver
Lauryn Menard