- added coloring for connectors and connections
depending on type
- added tooltips
- added typechecking for connections based on typetags instead of
  disgusting type-string comparison

- had to add a lot of code since vworkflows has some design issues,
where you cant override specific functions without copying all classes
over since they are only visible in the original packages...
maybe i am just too retarded.
- tried adding richtext editor for syntax highlighting but this didnt work
  out (exceptions on init richtext)