Move uitests package into treemap.tests package

Modify test runner to optionally run live tests

Remove management command for running ui tests. No longer needed because the standard test runner can run them.

Remove settings for uitests app
Modify selenium tests to use builtin test utils

Skip map test that never works.
Modify vagrant to allow x forwarding for selenium
Merge pull request #909 from steventlamb/topic/use_liveservertestcase

Topic/use liveservertestcase