Add Telegram Intregration

[jackdh]

• A new controller for Telegram
• Updated HTML within ThirdParty/index.js
• At least boiler code for test suites.

It does not look like Botkit currently supports Telegram. This may require further custom code for completion.

[jackdh]

So I've added the first stage of this however it is still slightly buggy overall.

I think i'm going to strip out the third party requirement and create the API calls myself.

[jackdh]

The third party element has been stripped out and seems to be working much better. Just need to create some tests as well as try all edge cases.