python API example added.
added missing link tag
update Python API
added install instructions for perl, python API examples
minor update to news and contact
Update faq.yml

Updated citation
update rails to latest version for security patches
update test suite to use new rspec expect syntax instead of deprecated should syntax
add new source to link helpers
add new source to normalizers
add new source importer
bump rails version
Merge branch 'master' into rails4

Conflicts:
	Gemfile
	Gemfile.lock
rename files to avoid eager loading issues and habtm issues
move activerecord models out of datamodel namespace
remove datamodel namespace from fabricators
get test suite working with namespace changes
use bootstrap 2 gem, not 3