Apply the same spam checks to public snippets (either personal snippets
that are public, or public snippets on public projects) as to issues on
public projects.
Altered specs that click capitalised New Snippet button
Applied review feedback missed in Changes `.no-comment` `opactiy: 0.5` to `opacity: .5`
Added `.btn-wide-on-xs` and applied to snippet buttons
Rearranged datetime created line
Added `avatar_class` option to `link_to_member` so it can be hidden
Made snippet title font heavier
Added file title bar
Hidden unneeded info from xs screens
Added visibility icon
Reveal file-actions on xs screens
Added comments icon to snippets list items
Refactored no-comments declaration into framework stylesheet
Final touch ups
Fixed snippets_spec
No longer shows New Snippet button to users who aren't able to create a new snippet in the given context.
Also removes the plus icon from the New Snippet buttons, as they're no longer used in other creation buttons.
Fixes#14595.
Split out header into shared partial
Used action partials to have unique actions for shared and personal
snippets
changed back to created date in list view
Switched to using existing color classes
