Make "Squash commits when merge request is accepted" visible in merge request

In our review process when the checkbox is enabled:

• Squash commits when merge request is accepted.

We don't pay attention to these quality measures:

1. merge commits are allowed
2. git fixup commits are allowed
3. revert commits are allowed

currently to see if the developer creating the MR has enabled the option, have to edit MR to see the checkbox, which is not very optimal.

extra:

• make the merged request also state that it was merged with a squash commit.

as currently you can't distinguish that either:

one of them was squash merged, I won't tell which one :P