feat(authoring): add task details in info pane
fix(mentions): enable search by first and last name

+ disable user info popup if the user doesn't exist

lint fix
fix(tasks): Fixed task preview to display des/user correctly.
fix(tasks): Added task assignee to task list view.
fix(tasks): html errors
Merge pull request #9 from nidzix/task-fix

fix(tasks): html errors
fix(tasks): Fixed creating a task with assigned desk but unassigned user.

SD-762
SD-769 : Display task creator

Added task creator and also fixed SD-399 Yauhen comment.
Merge remote-tracking branch 'gabriel/task_creator' into devel
Merge remote-tracking branch 'nikola/devel' into devel
fix(tasks): fixed minor issues, added assigneeView directive, updated desks service.
Merge remote-tracking branch 'ozan/task-preview-fix' into devel

Conflicts:
	app/scripts/superdesk-dashboard/tasks-controller.js
Merge remote-tracking branch 'upstream/devel' into devel