[KLR] Added Project model + associated models

• Categories (for projects)
• Projects
• Addenda (so that I can extend topics/descriptions as necessary for
any given project)
• Images (for projects)
[KLR] Added gitignore for .pyc files
[KLR] Improved Admin to add project in one screen
[KLR] Added image and addenda attachment descriptions

These will be 'src' and 'title' attributes for any images/links
[KLR] Removed .pyc files from repository
[KLR] Added first template to project
[KLR] Set up postgresql database
[KLR] Set up Compass sass project + starter variables
[KLR] Added requirements.txt doc.
[KLR] Adjustments for admin + added Project pages

Adjusted model to make admin easier.
Added Slugfield to model to store URL for each project.
[KLR] Added base template for index + project pages
[KLR] Added media url/root to settings file
[KLR] Added gitignore for media folders
[KLR] Added addenda folder to gitignnore
[KLR] Structure & styles for homepage
[KLR] Added main caption to project data model
[KLR] Adjustment for static files directory in settings
[KLR] Added 'percentageHeight' property to Project model

Allows for generating the height of the slideshow automatically based
on the main image uploaded to the project.
[KLR] Added project page and styles

Still need to:
• Add functionality for viewing private projects.
• Confirm that the page layout works for 3x4 images in the slideshow
(and possibly make adjustments to make sure images are easy to view at
standard screen sizes).
• Adjust styles for vertically oriented images (e.g. vertical iPhone
layout) so that slideshow fits/looks good on standard screens (since
size is currently determined by width of the container).
• Add some basic link styles.
• A bit more fine tuning.
• Add 'Get Lucky' functionality to nav.
• Ideally adjust carousel to have infinite scroll. (low priority; right
now it slides back to beginning at the end of the scroll, which works
fine).
[KLR] Added main image alt tag field to Project model