Added Elm_actionslider.
Added elm_action_slider_add.
Added elm_actionslider_selected_label_get.
Added elm_actionslider_indicator_pos_set/get.
Added elm_actionslider_magnet_pos_set/get.
Added elm_actionslider_enabled_pos_set/get.
Added events in Elm_actionslider.
Added elm_gengrid_clear.
Added elm_gengrid_multi_select_set/get.
Added elm_gengrid_horizontal_set/get.
Added elm_gengrid_item_prepend.
Added elm_gengrid_item_insert_before.
Added elm_gengrid_item_insert_after.
Added similar function of genlist in gengrid.