FIx MARATHON_UI-145 and added some features

[cedbossneo]

• MARATHON_UI-145 : The initial value of acceptedResourceRoles is null so there is no justification to return an array with the default value(*).
• Added GitHub release to travis configuration
• Added app description if _ui_description label is present
• Fix Endpoints uri scheme by adding a new config parameter : slavesScheme
• Added a link to each application to easily access it (appReverseProxy)
• Added a way to override the config at runtime by putting a file named runtimeConfig.js along with main.js :
  var runtimeConfig = {
  appReverseProxy: "http://%APP%.example.com"
  };
• Added a launch script that configure runtimeConfig via env variables

[schneidexe]

The thing with the * for resources is a real killer if you have exclusive slaves per framework. Even worse if there is a * marathon seems does not to accept explicit role-tied offers (e.g. slave role is services, backend, frontend, etc.)

👍 for this fix

[orlandohohmeier]

@cedbossneo thanks a lot for taking the time to address MARATHON_UI-145! 💯👍 Could you please split your changes into separate PRs so that we can review, discuss and land the different fixes and adjustments one after another? This will help fast track the fix and makes it easier to properly review your changes.

[orlandohohmeier]

@cedbossneo I'm sorry but I can't move this one forward as is. Please split your changes into separate PRs so that we can review, discuss and land the different fixes and adjustments one after another. Many thanks in advance!

[orlandohohmeier]

I'm going to close this PR as I'm unable to move this one forward in it's current state. I like to stress that I'm more than happy to review the respective adjustments, changes and fixes once they're extracted into separate PRs.