NGUI: Added more functionalities, final patch for angular based UI

This was a patch from Shiva Teja that handed up in my inbox because review board could not handle it.
It adds some functionalities to the angular js UI that lives under /tools

I also removed the comments in the html file.

Edit the config.py file with your cloudstack endpoint and keys
then: python ./app.py and open browser to http://localhost:5000

It can be merged anywhere really…but it's rebased on 4.4

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>