I have this error in our staging SharePoint farm. I can remove the references, but I'd like to reinstall the feature since we have this feature installed on production.
[MissingFeature] Database [STAGE_Farm_Content_Admin] has reference(s) to a missing feature: Id = [d95c97f3-e528-4da2-ae9f-32b3535fbb59], Name = [Mobile Browser View], Description = [Provide document library and other lists in team site with mobile view for smartphone browsers.], Install Location = [MBrowserRedirect]. The feature with Id d95c97f3-e528-4da2-ae9f-32b3535fbb59 is referenced in the database [STAGE_Farm_Content_Admin], but is not installed on the current farm. The missing feature may cause upgrade to fail. Please install any solution which contains the feature and restart upgrade if necessary.
If I look in '\Web Server Extensions\15\TEMPLATE\FEATURES' I see the MBrowserRedirect folder with the feature inside.