Issue #357: Add 'Cancel' link on node forms.
Issue #318: Rename comment's 'Subject' to 'Title' in the UI.
Merge pull request #493 from BWPanda/357/cancel_button_for_nodes

Issue #357: Add 'Cancel' link on node forms.
Merge pull request #495 from BWPanda/318/rename_comment_subject_to_title

Issue #318: Rename comment's 'Subject' to 'Title' in the UI.