Merge branch 'legacy-fe-config' into 'develop'

remove deprecated PleromaFE configuration

See merge request pleroma/pleroma!1152

CHANGELOG.md

@@ -97,6 +97,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Mastodon API: Exposing default scope of the user to anyone
 - Mastodon API: Make `irreversible` field default to `false` [`POST /api/v1/filters`]
 
+## Removed
+- Configuration: `config :pleroma, :fe` in favor of the more flexible `config :pleroma, :frontend_configurations` 
+
 ## [0.9.9999] - 2019-04-05
 ### Security
 - Mastodon API: Fix content warnings skipping HTML sanitization