add/edit testing environment

[nitedog]

1. add a page heading "Add Testing Environment" or "Edit Testing Environment"
2. add this sentence after the heading "Define an environment that you want to use to run test cases"
3. change "Additional Information" label to "About the Environment" and put it as first group
4. change "Profile name" to "Name" and "Profile comment" to "Comment"

[yatil]

Fixed everything, but: @evlach: change the Header to “Edit Testing Environment” when it is edited and not created

[evlach]

done