New icon, including its credits and license.

--HG--
extra : amend_source : 455a02298f99cdf920e7d363b2bc0af16287a232
Added tag 1.2 for changeset c7e842c6ba25
Relocate icon.

--HG--
rename : static/src/img/icon.png => static/description/icon.png
Added tag 2.0 for changeset b02cc7232200