Allow voice recording when media types whitelist is empty;

i18n/en.i18n.json

@@ -182,7 +182,7 @@
   "FileUpload_MaxFileSize" : "Maximum File Upload Size (in bytes)",
   "FileUpload_MediaType_NotAccepted" : "Media Types Not Accepted",
   "FileUpload_MediaTypeWhiteList" : "Accepted Media Types",
-  "FileUpload_MediaTypeWhiteListDescription" : "Comma-separated list of media types",
+  "FileUpload_MediaTypeWhiteListDescription" : "Comma-separated list of media types. Leave it blank for accepting all media types.",
   "FileUpload_ProtectFiles" : "Protect uploaded files",
   "FileUpload_ProtectFilesDescription" : "Only authenticated users will have access",
   "Follow_social_profiles" : "Follow our social profiles, fork us on github and share your thoughts about the rocket.chat app on our trello board.",

packages/rocketchat-ui-message/message/messageBox.coffee

@@ -26,7 +26,7 @@ Template.messageBox.helpers
 		}
 	canRecordAudio: ->
 		wavRegex = /audio\/wav|audio\/\*/i
-		wavEnabled = RocketChat.settings.get("FileUpload_MediaTypeWhiteList").match(wavRegex)
+		wavEnabled = !RocketChat.settings.get("FileUpload_MediaTypeWhiteList") || RocketChat.settings.get("FileUpload_MediaTypeWhiteList").match(wavRegex)
 		return RocketChat.settings.get('Message_AudioRecorderEnabled') and (navigator.getUserMedia? or navigator.webkitGetUserMedia?) and wavEnabled and RocketChat.settings.get('FileUpload_Enabled')
 	usersTyping: ->
 		users = MsgTyping.get @_id

packages/rocketchat-ui/views/app/room.coffee

@@ -167,7 +167,7 @@ Template.room.helpers
 
 	canRecordAudio: ->
 		wavRegex = /audio\/wav|audio\/\*/i
-		wavEnabled = RocketChat.settings.get("FileUpload_MediaTypeWhiteList").match(wavRegex)
+		wavEnabled = !RocketChat.settings.get("FileUpload_MediaTypeWhiteList") || RocketChat.settings.get("FileUpload_MediaTypeWhiteList").match(wavRegex)
 		return RocketChat.settings.get('Message_AudioRecorderEnabled') and (navigator.getUserMedia? or navigator.webkitGetUserMedia?) and wavEnabled and RocketChat.settings.get('FileUpload_Enabled')
 
 	unreadSince: ->