[IMP] base: improve kanban of modules, cards not clickable (top-right menu)

[NEW] base: show enterprise module, with an 'upgrade' button
[IMP] *: some modules renaming, and improved copywriting of manifest
[IMP] *: utm on links to odoo.com

odoo/addons/base/data/base_data.sql

@@ -64,6 +64,7 @@ CREATE TABLE ir_module_module (
     license character varying(32),
     sequence integer DEFAULT 100,
     auto_install boolean default False,
+    to_buy boolean default False,
     primary key(id)
 );
 ALTER TABLE ir_module_module add constraint name_uniq unique (name);