Merge pull request #297 from DavidZey/master

JIRA HUDEV-103 - add onPreStart app hook
Handle unknown objects sent as exception param on logger
Merge pull request #298 from etduroch/master

Handle unknown objects sent as exception param on logger
refactor on jsdom memory leak to call window close and to no longer cap jsdom resources
add simple resource counting to make sure rest of feather is properly releasing dom objects thru the manager
upgrade jsdom to newest stable 1.5.0