pointer event names are not exposed anymore as dpointer variables. Use the real name instead "pointerdown", "pointermove"...
Merge branch 'master' into themeRefactoring
use local variables.less to share less variable between lrt and rtl definition files.
allow widgets to use thier own variables.less to share variable between rtl/ltr less file without generating css.js file.
remove unnecessary -ms-touch-action (handled by dpointer).
use delite/themes/bootstrap/common
use delite/themes/common/mixins
update  *_css.js