xsce: added tags
xsce: update INSTALL and show tags usage
tags: added xo tag
tags: added download tag
tags: add systems tag to facts
tags: add squid tag to facts
Merge pull request #66 from scollazo/feature-tags5

Feature tags5
Merge branch 'master' into actserv-mods

Conflicts:
	roles/activity-server/tasks/main.yml