refs ITC-241: added home icon asset to /img
fixes ITC-241: Updated the home menu item to use the icon instead of text on desktop.
refs ITC-241: hid the home option on mobile
refs ITC-242: refactored offcanvas button bar text (using relative positioning to allow for variable height elements above it)
refs ITC-242: added basic html for basic outages alert
refs ITC-242: added mobile styles for basic outage notification
refs ITC-242: modified the structure of outages.php
refs ITC-242: added desktop styles for outages and modified mobile style to match new structure
refs ITC-242: outage alerts now configurable in the backend.  outages.php conditionally shows the outages based on those options
refs ITC-242: updated the templates to show outages
refs ITC-242: updated sidebar style to handle case where it is empty and there are outages
refs ITC-242: updated outages styles to reflect exact colors in mockup
refs ITC-242: redid the desktop styling to sit on top of the content instead of pushing it down
refs ITC-242: added outages alert to the front page
fixes ITC-242: basic outages alert implemented on all pages of itconnect
refs ITC-255: updated selected sidebar item background to be opaque as per spec
fixes ITC-291: explicity defined correct height and margins for IE's benefit
fixes ITC-292: removed IE specific background color for the dropdown ul (not needed because there's no transparency)
fixes ITC-302: explicity defined the right padding amount for both small and large desktop sizes
fixes ITC-230, 247, 296, 244: refactored the css to make seperate element for arrow in homepage sidebar links uneccessary and to gracefully handle overrun