ban, kick and change role&affil menu, status icons in muc, blocking avatars that are invalid so we dont fetch them over and over again

cache.go

@@ -19,7 +19,7 @@ import (
 var textureCache = make(map[string]gdk.Paintabler)
 
 // Invalid images, if an image/avatar cannot be loaded on the system (e.g: incompatible format) it's put here
-var invalidImages = make(map[string]bool) 
+var invalidImages = make(map[string]bool)
 
 func ensureCache() (string, error) {
 	cachePath := configdir.LocalCache("lambda-im")