[Ocs] Fans/Like API

[Josef Spillner]

Hello folks,

At the sprint we were pondering about running something similar to a service-
independent Like provider at some point in the future.
This would however mean to change the API of the Like module to also accept 
references to external sources instead of the (possibly activated) content 
within the same OCS instance.
Also, it cannot be named OpenLike, unfortunately. But ownLike would probably 
work :)

There's already a JavaScript thing called OpenLike (v1 and v2, both of which 
have demos which don't seem to work for me at the moment) which acts as a web 
widget to access web-based Like services.
In v2, domains for likeable objects were added which seem to be limited. 
Furthermore, the widget JavaScript code has the Like services hardcoded and 
always loads graphics directly from them, thus exposing the user's identity 
needlessly. Interesting idea, but rather sloppy implementation.

Currently, all of the supported services have site-specific APIs. Hence, 
OpenLike amusingly only refers to closed Like services and there is indeed a 
niche for an open, independent API to store Likes which can be implemented by 
any website or service provider.

For the desktop, Konqueror could have a "Like" button which supports this API 
as soon as the first Like provider has been configured, thus rendering all 
web-based Like widgets obsolete and giving the user full control.
The same button could be used in OCS client software such as the content 
download dialogue (aka GHNS).

Josef