Some markup fixes
Made versionadded consistent
minor #3717 [master] Fixed versionadded blocks (WouterJ)

This PR was merged into the master branch.

Discussion
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[master] Fixed versionadded blocks

It turns out we did a great job enforcing our new standard for 2.5.
However, there were some small mark-up fixes waiting for a fix (and one
consistency thing).

| Q   | A
| --- | ---
| Doc fix? | yes
| New docs? | no
| Applies to | 2.5+
| Fixed tickets | -

Commits
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b3372cf Made versionadded consistent
239b1b6 Some markup fixes