CON-1548 Mixins cleanup and move of Oasis' colors scss to shared repo
CON-1548 | Fix after CR
Merge remote-tracking branch 'origin/dev' into CON-1548

Conflicts:
	extensions/wikia/SpecialMarketingToolbox/css/MarketingToolbox.scss
	extensions/wikia/SpecialMarketingToolbox/css/MarketingToolbox_Dashboard.scss
	extensions/wikia/SpecialMarketingToolbox/css/MarketingToolbox_Footer.scss
	extensions/wikia/SpecialMarketingToolbox/css/MarketingToolbox_Header.scss
	extensions/wikia/WikiaHubsV2/css/ColorsPerVertical.scss
	extensions/wikia/WikiaHubsV2/css/FeaturedVideo.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV1/ColorsPerVertical.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV1/NewsTabs.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV1/Pulse.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV1/WikiaHubs.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV1/WikiaHubs.wikiamobile.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV2.scss
	extensions/wikia/WikiaHubsV2/css/WikiaHubsV2Mobile.scss
	extensions/wikia/WikiaHubsV3/css/WikiaHubsV3.scss
CON-1548 | Mixins cleanup
CON-1548 | Mixins - changes after CR
CON-1548 | Removed unnecessary code after Hubs removal
CON-1548 | clearfix mixin revert
Merge pull request #4408 from Wikia/CON-1548

CON-1548 Mixins cleanup and move of Oasis' colors scss to shared repo