adds flatpages fallback middleware to settings_common
moves flatpages templates directory to out of project folder and into root templates directory alongside 403, 404 and 500 templates
streamlines template block regions on base.html to remove unnecessary content blocks for each template as I had forgotten the best way to do this in a DRY manner
adds flatpages directory to templates to move about the data from hardcoded page to managing it via the flatpage application
moves index.html over to DRY content block
moves detail.html over to DRY content block
moves archives.html over to DRY content block
moves 403.html over to DRY content block; fixes page title for consistency
moves 404.html over to DRY content block; fixes page title for consistency
moves 500.html over to DRY content block; fixes page title for consistency
moves about.html over to flatpagecontent block
moves about page to flatpage for easier management
Merge pull request #88 from SCPR/calfire_app

Flatpages and content block tags...