Add option to `text` which makes it possible to return all text, not just invisible text, closes #960
Implement visible/all text in Selenium
Pass type through to document
Add type to matchers
Make text filter respect visibility filter
Expose current_scope as a session DSL method, closes #959
Merge pull request #962 from martijnwalraven/master

Expose current_node as a session DSL method, closes #959