Attempted to avoid double click on <a>.
Added Eclipse .buildpath to .gitignore.
Go back an arbitrary number of internal pages.
Added goBack with number as argument: Goes back this many steps.
Refined comments to express intention better.
Added test for goBack with argument as provided by @thomasyip. Thanks!
Reworked behaviour of goBack when number argument is used, as requested
by @thomasyip:
- Zero based index.
- Negative numbers mean: go back to this position from the beginning.