always refresh to get latest status
TestProcessUI added
refresh() action added to Page class
testInstances() finished
testLineageLink() added
ProcessUITest renamed
error message added to waitForElement()
waitForInstancesPanel() before get info from it
imports updated
use more feeds (as in LineageApiTest)
ProcessUITest tagged and documented
Page class documented
EntitiesPage class documented
EntityPage class documented
use generateFeeds() from LineageApiTest
Merge remote-tracking branch 'upstream/master' into processUI

Conflicts:
	merlin/src/main/java/org/apache/falcon/regression/ui/pages/ProcessPage.java
	merlin/src/test/java/org/apache/falcon/regression/ui/TestUISample.java
Merge pull request #268 from rostafiychuk/processUI

3 tests for ProcessPage UI