Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to cbb4b91ad39b44a76d1b1d4b745ef2b38fab74ce
  - bug: menu bar bug fixed
    
    Change-Id: I84dd884d6dbcd2831be238629eb5e0ba8ef8d1cc
    Issue-ID: USECASEUI-307
    Signed-off-by: cyuamber <xuranyjy@chinamobile.com>
    
1 file changed