Made the sidebar resizable, and sidebar open/close button position stationary

Conflicts:

	webapp/src/main/webapp/WEB-INF/tags/structure/structure.tag
Removed max results limit when retrieving standalone iterations
Updated spring security version
Updated Jackson to 2.3.0

Conflicts:

	pom.xml
Fix to timesheets: show hours only from standalone iterations that the user can access
Fixed showing standalone iterations in timesheets for non-admins
Changed retrieveLoginCountByUser to happen in a read only transaction
Added filtering by responsible initials to project's story tree and leaf stories
Added story id and task id to timesheet export

Conflicts:

	webapp/src/main/resources/messages.properties
Added reference link for task
Fixed timesheet export tests
Added 'object not found' page
Prevent blur event when clicking on bodyWrapper area's scrollbar
Updated wro4j version - build will now fail if there are javascript errors that prevent minification

Conflicts:

	pom.xml
Removed old mysql dump based backup
Nonadmins can create other nonadmin users from users page
Fixed columns of disabled users for nonadmins
Put new tasks to the top of the task list
Fixed task tests broken in previous commit
Removed search limit of 51 results