Review application and distribution version

We currently have the following properties:

• org.nuxeo.ecm.instance.name=Nuxeo 7.10-SNAPSHOT (unused as well as the label label.setup.org.nuxeo.ecm.instance.name)

• org.nuxeo.ecm.product.name=Nuxeo Platform
• org.nuxeo.ecm.product.version=7.10-SNAPSHOT (org.nuxeo.launcher.config.ConfigurationGenerator.PARAM_PRODUCT_VERSION)

• org.nuxeo.distribution.version=7.10-SNAPSHOT (org.nuxeo.common.Environment.DISTRIBUTION_VERSION)
• org.nuxeo.distribution.name=cap (org.nuxeo.common.Environment.DISTRIBUTION_NAME)

The goal is to distinguish the "technical" or "internal" version from the "application" or "product" (end-user) version.

Login Page must display "Nuxeo Platform LTS 2015".
Admin Tab / System Information / Nuxeo distribution must display:

Nuxeo application name     Nuxeo Platform
Nuxeo application version  LTS 2015
Distribution name          cap      
Distribution version       7.10     
Distribution date          201511272213

Review all usages of those properties and set org.nuxeo.ecm.product.version=LTS 2015.

Remove org.nuxeo.ecm.instance.name and label.setup.org.nuxeo.ecm.instance.name.