Clean up & Add connection setup

backend/src/Model/TopicProperties.ts

@@ -1,4 +0,0 @@
-export class TopicProperties {
-  public topicSeparator: string = '/'
-  public multilevelWildcard: string | null = '#'
-}

backend/src/Model/index.ts

@@ -3,5 +3,4 @@ export { TreeNode, TreeNodeUpdateEvents } from './TreeNode'
 export { Message } from './Message'
 export { TreeNodeFactory } from './TreeNodeFactory'
 export { Tree } from './Tree'
-export { TopicProperties } from './TopicProperties'
 export { Hashable } from './Hashable'