Debugger: Fix setting of breakpoints in disassembler view

Task-number: QTCREATORBUG-10410
Change-Id: I76f6b430c277b6b7750c1c0b0de71e689dfea7de
Reviewed-by: hjk <hjk121@nokiamail.com>
Bookmarks: Disable context menu for disassembler view

This is a hack for now.

Task-number: QTCREATORBUG-10410
Change-Id: I1f6cdc31614231b81588b100a5a03a4308013774
Reviewed-by: hjk <hjk121@nokiamail.com>