fix(style): ordered list markers now always visible

Due to the default list-style-position: outside, list markers would extend
to the left of the elgg-body content and be cut off due to the way that
element is layed out. Here we change the model to inside position.

Fixes #7206
Merge pull request #7212 from mrclay/7206

fix(style): ordered list markers now always visible
Merge branch '1.9' of github.com:Elgg/Elgg into 1.9