chore(bower): bump codemirror to 5.2
chore(bower): bump codemirror to 5.2

zhaokunfay/ui-codemirror,episodeyang/ui-codemirror,zhaokunfay/ui-codemirror,rbw0/ui-codemirror-merge,episodeyang/ui-codemirror,angular-ui/ui-codemirror,rbw0/ui-codemirror-merge,angular-ui/ui-codemirror