Fixed: dump_drupal.py for production server

Encoding once again didn't work when dump files were being imported on the production server. A rough decoding method was added to just guess the encoding of, e.g., a title if it isn't plain text.
Updated: download.html template

Some UI changes:
 - Removed old confirmation box, and placed one at the 'remove selected' button instead to prevent confusion.
 - Some text changed for slightly better directions.
Added: Basic sorting to search

Sort query parameter implemented -- just for the demo