In order to reduce the number of total modules, consolidate the following:
- ext.growthExperiments.HelpPanel.icons
- ext.growthExperiments.Homepage.icons
- ext.growthExperiments.AddLink.icons
ext.growthExperiments.mobileMenu.icons is only used for mobile and has a different selector than the rest of the icon modules, so it may not make sense to consolidate this as well.