Mayan EDMS version 2.1.2 released

Version 2.1.2 packaged and uploaded to PyPI (https://pypi.python.org/pypi/mayan-edms/2.1.2) This is a bug fix version and all users are encouraged to upgrade.

Changes:

• Sort document languages and user profile locale language lists. GitLab issue #292.
• Fix metadata lookup for {{ users }} and {{ group }}. Fixes GitLab #290.
• Add Makefile for common development tasks

Big thanks to all contributors, testers, translators, mailing members, supporters and users.

• Release Notes: https://docs.mayan-edms.com/releases/2.1.2.html
• Downloads: https://pypi.python.org/pypi/mayan-edms/2.1.2