Merge pull request #1 from NullMode/master

Updating requirements
Merge pull request #2 from NullMode/master

PEP8 + general tidy
Merge pull request #3 from NullMode/master

Updates loading of static file and url lookups
Added session check

* node/node.py
  -- Fixed Nullmode's path issue
  -- Added a check for sessions
Added node deletion support