Replacing notifications by a banner style

Note that this PR also includes the modifications about the tasks list from #771

![screen shot 2014-10-31 at 12 49 13](https://cloud.githubusercontent.com/assets/197573/4860147/fb972cce-60f3-11e4-9fe8-1247931a4d20.png)
``t`` instead of ``T``.
Also remove ``have`` (since grammatically it is `1 test(s) has` and `(n+1) test(s) have`. To remove this incorrectness we can just drop the word. (Not super important but some people might get upset).