OSX/CI: kate uses invalid category

[Marko Käning]

When building kate I suddenly see tons of these warnings popping up:



CMake Warning at /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kdesupport/extra-cmake-modules/inst/share/ECM/modules/ECMInstallIcons.cmake:176 (message):
  Icon kate.png uses invalid category app, setting to 'actions'
Call Stack (most recent call first):
  /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kdesupport/extra-cmake-modules/inst/share/ECM/modules/ECMInstallIcons.cmake:124 (_ECM_ADD_ICON_INSTALL_RULE)
  /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kdesupport/extra-cmake-modules/inst/share/ECM/modules/ECMInstallIcons.cmake:207 (_ecm_install_icons_v1)
  kate/icons/CMakeLists.txt:2 (ecm_install_icons)


CMake Warning at /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kdesupport/extra-cmake-modules/inst/share/ECM/modules/ECMInstallIcons.cmake:176 (message):
  Icon kate.svgz uses invalid category app, setting to 'actions'
Call Stack (most recent call first):
  /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kdesupport/extra-cmake-modules/inst/share/ECM/modules/ECMInstallIcons.cmake:159 (_ECM_ADD_ICON_INSTALL_RULE)
  /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kdesupport/extra-cmake-modules/inst/share/ECM/modules/ECMInstallIcons.cmake:207 (_ecm_install_icons_v1)
  kate/icons/CMakeLists.txt:2 (ecm_install_icons)