Convenience class for obtaining styling information for elements.
Add more documentation to StyleCache.
Remove check because element is always defined.
Fix the function description for parsing a positive number or percentage.
Remove console from jsline keywords.
Clarify class names and improve documentation.
Class names should be added to the style chain after the style name.
Bring documentation about style chain keys in line with practice.
Clearer variable names.
Also add master page to the list of parsed master pages after parsing it.