Add OCA as author of OCA addons

In order to get visibility on https://www.odoo.com/apps the OCA board has
decided to add the OCA as author of all the addons maintained as part of the
association.

[UPD] prefix versions with 8.0

Add missing default oca icons

mass_editing/__openerp__.py

@@ -21,8 +21,8 @@
 ##############################################################################
 {
     "name": "Mass Editing",
-    "version": "1.3",
-    "author": "Serpent Consulting Services",
+    "version": "8.0.1.3.0",
+    "author": "Serpent Consulting Services,Odoo Community Association (OCA)",
     "contributors": [
         "Oihane Crucelaegui <oihanecrucelaegi@gmail.com>",
     ],