fixing public user documentation

fixing public user documentation
adding login link to the public access doc
formatting new text
Merge pull request #520 from aleksandra-tarkowska/public_user

fixing public user documentation
replace ellipses in user docs
replace ellipses in sysadmin docs

Conflicts:
	omero/sysadmins/server-tables.txt
	omero/sysadmins/unix/install-web.txt
replace ellipses in developer docs
replace ellipses in format docs

Conflicts:
	formats/schemas/index.txt
Marking up example links
Merge pull request #525 from mtbc/ellipses

use Unicode ellipses (rebased)
Actually making links not checked
Revising testing page to document pytest. See #11423
Add further help on using setup.py
Fix a few minor errors from PR review.
Adding note about non-existent links to readme
Making backslash actually show up!
Improving readme note
Further improvement
Merge pull request #527 from hflynn/linkfix

Marking up example links
Minor changes following review.