Fix Views Menus

1. Modified icons_form_views_ui_edit_display_form_alter() to only display the icon settings on the views menu form
2. Modified icons_form_views_ui_edit_display_form_alter() to add Prefix/Suffix titles to the elements
3. Modified IconsManager::getMenuItemIcons() to retrieve the icon values from the correct area in the $options array.

Automatically closed - issue fixed for 2 weeks with no activity.