added description for external networks
fixed an error
added descriptions to organization, site and host in backend
Merge branch 'master' of https://github.com/GLab/ToMaTo into more_descriptions
migration for descriptions
added new field to info and modify
added descriptions to hosts
added descriptions to sites
added descriptions to organizations
changed column orders
added site description to editor
creation date of a template is now shown in editor
changed "no nlXTP icon" to be a warning instead of an error
added max height/width to image in hoverbox
removed description
Merge pull request #301 from t-gerhard/more_descriptions

More descriptions