   [OCC-536] give main content div fluid layout
   [OCC-536] give main content div fluid layout

    Main use case of oneclick-core app is expected to be on a non-mobile screen,
    so change main content div class from "container" to container-fluid

camsys/oneclick-core,camsys/oneclick-core,camsys/oneclick-core,camsys/oneclick-core