Minor documentation fixes

Whitespaces, ReST formatting, syntantic errors and a small addition to
README.rst
tox test was pointing to old manage.py location

manage.py has been moved to /servermon/manage.py but the tox.ini has not
been altered.  Merely update the path.
Merge pull request #14 from hashar/managepy-path-update

tox test was pointing to old manage.py location
require Django >=1.2 but < 1.5 + link to tutorial

Alexandros told me that supporting Django 1.5 is on the plan but not
ready yet, so be safe and require at most 1.4.x.

Running tests with tox would install the latest 1.4 version for us. One
could do that using:

 tox -epy27

Eventually want to recreate the env with: tox -epy27 -r
Comment ldapBackend in settings.py.dist

LDAP backend should not be by default enabled but rather on-demand
Minimizing some titles in hwdoc overview

Removed the '% of Equipment' rendundant string