accounts: add ability to label users

press the pen icon next to their username to add a nick-name to remind
you who they are.

router.go

@@ -160,6 +160,7 @@ func (app *appContext) loadRoutes(router *gin.Engine) {
 		api.DELETE(p+"/profiles", app.DeleteProfile)
 		api.POST(p+"/invites/notify", app.SetNotify)
 		api.POST(p+"/users/emails", app.ModifyEmails)
+		api.POST(p+"/users/labels", app.ModifyLabels)
 		// api.POST(p + "/setDefaults", app.SetDefaults)
 		api.POST(p+"/users/settings", app.ApplySettings)
 		api.POST(p+"/users/announce", app.Announce)