Fix some jshint issues in core/js/share*

core/js/shareconfigmodel.js

core/js/sharedialogexpirationview.js

core/js/sharedialoglinkshareview.js

core/js/sharedialogmailview.js

core/js/sharedialogresharerinfoview.js

core/js/sharedialogshareelistview.js

core/js/sharedialogview.js