Add links in footer of base.html

Add links such as Wiki, Issues, etc. at the footer of base.html.

Change-Id: Ibec50b9be2a7339efe2f778ef3889e439a2e5f02
Fixes: #1981
Add unittest for importing scm script

Test addition, deletion for Domain, SubDomain
Test addition, deletion, update, transform for DomainRole

Change-Id: I94f3ff0f6e9e39302ba40e52b3abcfa77e9b2aea