Heroku Eclipse plugin compatibility

[Filirom1]

Heroku client use query parameters but Heroku Jar used by Heroku Eclipse Plugin use body parameters:

https://github.com/openruko/apiserver/blob/master/apiserver/apiglue.js#L153.

APIServer only define one payload source : https://github.com/openruko/apiserver/blob/master/apiserver/api/login.js#L3

[Filirom1]

BTW, apiserver does not respect Heroku API for Heroku Eclipse plugin.
A lot of things has to be changed.