tests: generate test.ini directly from template

Get rid of the committed generated test.ini

lib: remove unused kallithea/lib/profiler.py

pylint found import-error 'import objgraph'. This is bit-rotten and doesn't
seem like something we need. If we need it, there is probably a better way to
do it now.

gearbox: make a make-config sub-command available again

Drop the old kallithea-config command line tool and rework it to a replacement
for the make-config paster command. Make-config was experimental in paste, it
doesn't exist with gearbox, it was tied to pylons, and we already have the
luxury problem of having two ways of doing almost the same thing. This is a
good opportunity to get rid of one of them.

This replacement tool is Kallithea specific and doesn't need to be told that it
is Kallithea it has to create a config file for. The command should thus
perhaps be given a Kallithea specific name instead of the very generic name ...

middleware: replace references to Errormator with AppEnlight.

Errormator has been rebranded as AppEnlight a while back.

Errormator is no longer available. This is just a trivial rename that can't
make things worse.

docs: drop empty Changelog in the documentation

Changelog.rst is empty and just refer to the Mercurial logs. More readable
release notes and other meta information is also available on the web site and
in announcement mails.

tests: remove reference to removed kallithea/tests/parameterized.py

The file was removed in 66c40720e7b2. I guess tests still passed because it
still found the .pyc file.