adjust page title: it's far more than just writing tests
Fix line wraps.
Add in indefinite articles.
Merge pull request #460 from mtbc/rebased/develop/tests-title

Expand the title of the "writing tests" page (rebased onto develop)
Merge pull request #448 from ximenesuk/managed-repo

Managed repository
merge develop -D org -I include -E exclude: PR 369 (Cpp: Correct content and markup)
merge develop -D org -I include -E exclude: PR 437 (Generate PDF using XeLaTeX)
merge develop -D org -I include -E exclude: PR 450 (omero: Python 2.6 is the minimum supported version)