Update git submodules

Update git submodules

* Update docs/submodules/portal.git from branch 'master'
  to 3462e289aec5880f3e2f2f23ce4b5f70160ba7f4
  - Merge "XSS Vulnerability fix in AppsControllerExternalRequest"
  - XSS Vulnerability fix in AppsControllerExternalRequest

    @SafeHtml annotation is used to fix this problem.

    This patch also fix some minor issues:
    * isAuxRESTfulCall() method delete. Method was nowhere used.
    * '.length() == 0' changed to '.isEmpty()'

    Issue-ID: PORTAL-604
    Change-Id: Ib7091622081f507812654b50275ad7ac4c97bfc3
    Signed-off-by: Dominik Mizyn <d.mizyn@samsung.com>