Disable pressing enter key in section headers and figure captions

Change-Id: I7fac10e77aed3774ceb8597dc8a975658f37fb51
Apply cxEditor to the title of translated article also

Because target page title is also editable

Change-Id: Icd1990f6cac2e64e5a48edba7c0c98d6b5f2fd2c