Switch from goo.gl to bit.ly

goo.gl seems to go offline.  Quote:

> Starting March 30, 2018, we will be turning down support for goo.gl URL
> shortener. From April 13, 2018 only existing users will be able to create
> short links on the goo.gl console. You will be able to view your analytics
> data and download your short link information in csv format for up to one
> year, until March 30, 2019, when we will discontinue goo.gl. Previously
> created links will continue to redirect to their intended destination. Please
> see this blog post
> https://developers.googleblog.com/2018/03/transitioning-google-url-shortener.html
> for more details.

Quote from that blog post:

> Starting April 13, 2018, anonymous users and users who have never created
> short links before today will not be able to create new short links via the
> goo.gl console. If you are looking to create new short links, we recommend you
> check out popular services like Bitly and Ow.ly as an alternative.

Thanks to @shlomif for the notification!

Closes #469.

Conflicts:
	debian/upstream/metadata

README.md

@@ -3,7 +3,7 @@ Telegram-Purple Unofficial (Beta)
 
 Telegram-purple is a Libpurple protocol plugin that adds support for the Telegram messenger.
 
-I keep getting many questions about this plugin in my E-mail, so I've created a [telegram group chat](https://goo.gl/VudXys) for
+I keep getting many questions about this plugin in my E-mail, so I've created a [telegram group chat](https://bit.ly/2S539ia) for
 telegram-purple related discussions or questions.
 
 Installation
@@ -251,7 +251,7 @@ FAQ
 
 Telegram group chat for telegram-purple or libtgl related discussions or questions:
 
-    - https://goo.gl/VudXys
+https://bit.ly/2S539ia
 
 
 Submitting Bug Reports