test(docs): ignore some of the specs on IE

This target was never un on our Jenkins CI. Some of the specs are using animation stuff, that IE does not support, so I'm disabling them.
chore: run more browsers on Travis (IE8,IE9,IE10,Safari,FF)

Also instead of running everything in parallel, there are only two parallel tasks:
- e2e tests running in the background (only on Chrome)
- all the unit tests running sequentially
chore: use only polling on Travis/SL
WIP: use temp version of karma/jasmine