Bugfixes and Improvements in CMDB

Bugfixes:
* display correct icons in impact graph
* correct adding `CI's` in admin 

Improvements:
* display created data in `Repo changes` tab
* remove unnessesery js code
* `__unicode__` method in `BusinessLine` and `Service`
* minor style changes in templates
* better displayed results searches `CI's` in `Impact Report` view

http://ralph.allegrogroup.com/buildbot/builders/unittest-ralph-quamilek/builds/203