(tox) Moved everything test-related to tests/
(tox) Added tox

Added tox.ini file;
Added tests/settings.py;
Updated dependency versions in setup.py;
Updated .gitignore.
(tox) Some fixes

Changed tox's command dir and moved results xml accordingly.
Merge branch 'master' into tox

Conflicts:
	.gitignore
	smartsnippets/tests/settings.py
	smartsnippets/tests/tests.py
	tox.ini
(tox) Added more flags to tox.ini
Re-added removed files
(tox) Fixed indentation

Changed tabs to spaces.
(tox) Moved full.log
Merge branch 'tox'