Created Building Navigation Bar

The building navigation bar is the one that staysb on the top of each
page related to the building: metrics, baseload and building page.
Now these pages EXTEND building_navigation_bar.html and the blocks {%
block headblock %} MUST have building_ in the name eg {% block
building_headbock %}
Merge branch 'master' of https://github.com/wellincall/charts_test_api_SRC

Conflicts:
	Charts/templates/energy_and_occupants/building_page.html