fix developer CI page titles
add "|" around branch name to match other one
fix list punctuation
explain "on hold" GH issue label
simplify discussion of scc dependencies in Python
change "scc" style
stopgap solution suggested by @hflynn
fix typo
Merge pull request #462 from mtbc/rebased/develop/ci-titles

Adjusted titles of continuous integration developer pages (rebased onto develop)