Merge branch 'release/0.15' into develop
Updates documentation with additional installation info.
More sane defaults for title and subtitle.
Code simplification.
Updates documentation of content configuration.
Adds tests for utils.py.
Adds test cases for utils.py, comment.py, querybuilder.py.
Refactors connection out of class Table. Replaces mock data with real data from test database. Fixes #6.
Enables installation without PostgreSQL or MySQL installed. Support for those databases will be enabled as soon as either psycopg2 or mysql-python gets installed (see section Installation in README.md).
Version bump to 0.16.
Merge branch 'release/0.16'