Adds mention of Redcarpet as Markdown parser in docs
It makes it easier for users to find the source of issues related to
Markdown parsing.
[ci skip]
See merge request !3168
rewrite logo to simplify SVG code
_Originally opened at !3129 by @slang._
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The look of the logo is obviously unchanged... This just gets rid of some useless SVG groups that Sketch made.
See merge request !3164
Set color text to blue for links inside gray areas
Closes#14011

See merge request !3147
Decrease the font size and the padding of the `.anchor` icons used in the README
_Originally opened at !2819 by @roperzh._
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## What does this MR do?
Removes an overlap between the anchor icons on the readme and the sidebar on small screens by reducing the size and the padding of the icon.
## Are there points in the code the reviewer needs to double check?
Probably someone in the Design / UX team will need to review if the solution makes sense.
## What are the relevant issue numbers?
Issue #13334
## Screenshots

See merge request !3150
Fixed quick submit on note edit
Also removed the cloning of forms for note edits. Instead it just hides/shows the form seeing as it is already there
Closes#14094
See merge request !3151
The method Project#ci_services would load all services into memory
(including _all_ their columns) and then use Enumerable#select to reduce
the list. Project#ci_service in turn would further reduce this list down
to just 1 Service instance.
Instead of doing all this in Ruby we can just offload the work to the
database, reducing the amount of time spent in these methods. These
changes reduce the time of the first call to Project#ci_services from
around 240 ms to around 10 ms, though the final timings will vary based
on database load. Because Project#ci_service is memoized there's no
further overhead introduced by using a database query.
Fixesgitlab-org/gitlab-ce#14186
Fixes issue with markdown snippet not being copyable
On markdown snippets this adds a hidden div with the raw markdown content so that it can be copied
Closes#13882
See merge request !3153