Fixed a couple of recurring js errors in the rule view and markup-view
Adds pseudo-elements support and retrieves inherited styles in one request (Fix #36)
Merge pull request #40 from captainbrosset/markupview-ruleview-errors

Fixed a couple of recurring js errors in the rule view and markup-view
Merge pull request #42 from captainbrosset/getapplied-styles-refactor

Pseudos support and retrieving inherited styles in one call