<ChannelContainer @channel={{this.model}}
                  @showChannelMenu={{this.showChannelMenu}}
                  @newMessage={{this.newMessage}}
                  @onMessage={{fn this.sendMessage}}
                  @onCommand={{fn this.executeCommand}}
                  @onMenu={{fn this.menu}} />

<ChannelContainer @channel={{this.model}}
                  @space={{this.currentSpace}}
                  @newMessage={{this.newMessage}}
                  @showChannelMenu={{this.showChannelMenu}}
                  @addUsernameMentionToMessage={{fn this.addUsernameMentionToMessage}}
                  @onMessage={{fn this.sendMessage}}
                  @onCommand={{fn this.executeCommand}}
                  @onLeaveChannel={{route-action "leaveChannel"}}
                  @onMenu={{fn this.menu}}
                  @sidebarClass={{this.sidebarClass}} />

Add missing arguments to ChannelContainer for DM channel
Add missing arguments to ChannelContainer for DM channel

Fixes #214

This fixes a few undefined/not a function errors.
