Updated data models of subject Social media

The 5 data models of social media subject have been updated to ensure compatibility with other data models.

• SMAnalysis. This entity contains a harmonized description of a generic SMAnalysis made for the Social Media domain. This entity is primarily associated with the process of analysis of Social Media applications’ posts.
• SMCollection. This entity contains a harmonized description of a generic SMCollection made for the Social Media domain. This entity is primarily associated with the process of collection of Social Media posts (primarily Twitter).
• SMPost. This entity contains a harmonized description of a generic SMPost made for the Social Media domain.
• SMRefLocation. This entity contains a harmonized description of a generic SM Reference Location (SMRefLocation) made for the Social Media domain.
• SMUser. This entity contains a harmonized description of a generic SMUser made for the Social Media domain. This entity is primarily associated with the description of a user of Social Media applications.