Fixes issues #5 and #6.
Merge pull request #7 from rasilang/master

Fixes issues #5 and #6. Thanks a lot, great job!
User relateive paths in settings.py
Removed extraneous error_message in layer detail page
Added setup.py
Added empty CHANGES file
Switched to pinax-theme-bootstrap, in order to make our site prettier
Updated installation instructions
Added bootstrap and leaflet
Applied bootstrap to layer list page
Added slug field
Added link to layers
Added watercolor maps from stamen
Update README.md
Added bbox field
Added pre_save signal handler
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Added unzipping of shapefile
Added bbox to javascript interface
Added style field for CartoCSS