web: UX improvements for the sidebar menu. - Open/close the menu on click instead of mouse hover, so it's more friendly to mobile/touch devices. - Rework how the menu lock works.

sudo: false
language: python
python:
  - "3.4"
  - "3.5"
  - "3.6"
install:
  - "pip install -r requirements.txt"
  - "pip install -r dev-requirements.txt"
script: py.test