Update navigation on all pages.

Also, create all missing pages.
Update video demo page.
Update all pages with correct navigation.
Add correct active tab to all pages.
Create sidebar property search markup with tabs.
Create basic search form for residential tab.
Create flexbox mixins.

.mixin class now in scaffolding.less.
In sidebar, replace <h4>s with <dl>s.
Fieldset styling.

Also remove flexbox classes from columns.
HTML height change to ":auto" to fix bg issue.
Another BG html element fix: min-height:100%;
Responsive property search styling.
Add all prop search tab forms.
Add about.html copy.

Change .container alpha to .5.
Add Google Map and content to contact page.
Update tel formatting on contact page.
Property details page.
Link page. Add debug styles.
Style breadcrumb navigation.
Renamed index.html>_index.html
Replace Google Map API with iFrame version.