Turn off server Slack message unfurling

Also cleaning up some message URL formatting.

server/commons/Handler.coffee

@@ -480,7 +480,7 @@ module.exports = class Handler
     sendwithus.api.send context, (err, result) ->
 
   sendChangedSlackMessage: (options) ->
-    message = "#{options.creator.get('name')} saved a change to <a href=\"#{options.docLink}\">#{options.target.get('name')}</a>: #{options.target.get('commitMessage') or '(no commit message)'}"
+    message = "#{options.creator.get('name')} saved a change to #{options.target.get('name')}: #{options.target.get('commitMessage') or '(no commit message)'} #{options.docLink}"
     rooms = if /Diplomat submission/.test(message) then ['dev-feed'] else ['dev-feed', 'artisans']
     slack.sendSlackMessage message, rooms
 

server/middleware/versions.coffee

@@ -95,7 +95,7 @@ module.exports =
     docLink = "http://codecombat.com#{editPath}"
 
     # Post a message on Slack
-    message = "#{req.user.get('name')} saved a change to <a href=\"#{docLink}\">#{doc.get('name')}</a>: #{doc.get('commitMessage') or '(no commit message)'}"
+    message = "#{req.user.get('name')} saved a change to #{doc.get('name')}: #{doc.get('commitMessage') or '(no commit message)'} #{docLink}"
     rooms = if /Diplomat submission/.test(message) then ['dev-feed'] else ['dev-feed', 'artisans']
     slack.sendSlackMessage message, rooms
 

server/patches/patch_handler.coffee

@@ -112,7 +112,7 @@ PatchHandler = class PatchHandler extends Handler
     sendwithus.api.send context, (err, result) ->
 
   sendPatchCreatedSlackMessage: (options) ->
-    message = "#{options.creator.get('name')} submitted a patch to <a href=\"#{options.docLink}\">#{options.target.get('name')}</a>: #{options.patch.get('commitMessage')}"
+    message = "#{options.creator.get('name')} submitted a patch to #{options.target.get('name')}: #{options.patch.get('commitMessage')} #{options.docLink}"
     slack.sendSlackMessage message, ['dev-feed']
 
 module.exports = new PatchHandler()

server/slack.coffee

@@ -18,6 +18,8 @@ module.exports.sendSlackMessage = sendSlackMessage = (message, rooms=['tower'],
       token: token
       text: message
       as_user: true
+      unfurl_links: false
+      unfurl_media: false
     if options.papertrail
       secondsFromEpoch = Math.floor(new Date().getTime() / 1000)
       link = "https://papertrailapp.com/groups/488214/events?time=#{secondsFromEpoch}"