Major Changes (see Ext. Description)

Created HttpApplication class to extend Flask. HttpApplication includes
property "markdown_folder" that can be set in the constructor (defaults
to 'content'). This sets the directory for markdown files. I set it at
'/app/frontend/content'.
Also created function "render_markdown" in "app/lib/HttpApplication.py"
that you pass the name or path of the markdown file to render relative
to the markdown_folder set in the HttpApplication class constructor.
Using render_markdown should abstract away file manipulation.

I changed most of the pathing to be Operating System independent using
the os.path functions.

I downloaded common CSS and JavaScript libraries:
* bootstrap 3
* jquery-1.10.2
* jquery-2.0.3
* less-1.5.1
* modernizr-2.7.1

I created "app\frontend\templates\layout.html" as a primary layout that
other layouts can extend (similar to default.html in the same
directory). This layout references and loads resources as recommended by
the "HTML5 Boilerplate" project to ensure maximum browser compatibility.
The layout also uses Bootstrap styling and classes to ensure browser
compatibility and continuity.

Added SECRET_KEY to settings.py for future development of session
management.