Merge pull request #46 from stbnps/master

The system now yields better results.
Start more things on tests:test() :

  * Install mnesia DB if not installed yet.
  * Start web interface.
Fixed bug on keeping the URL list, check duplicates against current URL,
crawled and not crawled URLs.

  Fixes #47
Removed deprecated epc_dba tests
Clicking on the link on top returns to the main page
Reduce memory footprint, only move around image urls, and check on the indexer
if they are correct.
Don't download already indexed images
Added crawled urls and indexed image counts on the web frontend.

  Fixes #42
Also keep the URL if an image is found
WTFPL License
Created process to deal with Internet connections.