only update last active if when vumi updates
Update views.py
pep8 fixes
gerge branch 'feature/tests' into develop
Merge branch 'feature/issue-135-vumi-dashboard' into develop

Conflicts:
	oneplus/views.py
Update views.py
Update views.py
Update views.py
Merge pull request #111 from praekelt/feature/issue-135-vumi-dashboard

only update last active if when vumi updates