Separate accept MR settings from manual merge instructions. Remove confusing `click here` links

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'mr-accept-widget' into 'master'

Improve MR accept widget

* fixes UX problem with 2 confusing `click here` links.
* separate Accept MR block from manual merge instructions

See merge request !1014