Test suite - change knockout version to 3.0 and jquery to 1.10.2, add separate test pages for knockout 2.2.1 and 2.3.0

I'd prefer to still test knockout 2.2.1 and 2.3.0 for a while, so we notice exactly when a code change does require a newer major or minor knockout version. 
This new pull request is incompatible with the other open pull request: 
https://github.com/bramstein/knockout.selection/pull/75