Fixed FTBFS
Fixed FTBFS

* Fixed wrong minimum version for QtXdg - it must be QTXDG_MINIMUM_VERSION
  instead of QT_MINIMUM_VERSION
* Added CMAKE_INCLUDE_CURRENT_DIR
* Moved add_subdirectory(iconview) under set($foo)
* fixes lxqt/lxqt-connman-applet/issues/25

surlykke/lxqt-connman-applet