fix codeclimate folders

MdlScreenSizeService.isSmallScreen added

bump version

fix: mseemann#973 - do not destroy screensizeservice on mdllayoutcomp…

…onent destroy

remove debug code

fix: mseemann#536

remove check that mdl-list-item need mdl-list as a parent

fix: mseemann#765 - OpaqueToken has been deprecated

prepare 4.0.1

prepare release 4.0.0