Revert "Downgraded SSL version to TLS 1 until we have the requests library fixed"

- TLS1.2 does not work on older pythons (like on MacOSX)
  but it works as intended on current linux versions
  so enable it if possible

This reverts commit 666630f2a01bdeb7becc3cd3b324c076eaf1567d.

Conflicts:
	pixelated/common/__init__.py