adding custom translator to pdfquery
had fn name and logic mixed up. sry.
mod egg SOURCES file
forgot to use the axtual xpathExpr method for adding conditions since i removed the custom xpathExpr class
adding support for non-string argument list (seems more css-line)
using custom css_translator with all PyQuery constructions
Adding tree cache to avoid generating the tree more than once.
Merge pull request #8 from eTilbudsavis/master

Use separate cssselect library; replace monkeypatch with proper custom selectors; add tree cache.