Merge pull request #23 from FlorianRappl/devel

Included bugfix for empty string representation of style rules.
Merge pull request #24 from FlorianRappl/devel

Alright.
Dropped switch-case for strings
Globals partially readonly and possible memory leak removed
Guaranteed to return a configuration
Simplified tokens, increased hierachy flatness
Outsourced to extension methods, fixed template bug