REFS: #255 online species create and edit
REFS #255 showing/hiding other language content in species show
FIXES: #349 observationservice is null in AbstractObjectController.
removed it from all subclasses
REFS #255 few fixes
REFS #255 fixed adding hierarchy in species show page
REFS: #255 updated homepage images to blank images and placed text in
html
Merge branch 'biodiv2.0' of https://github.com/strandls/biodiv into biodiv2.0

Conflicts:
	grails-app/controllers/species/TaxonController.groovy
	grails-app/i18n/messages.properties
	grails-app/services/species/UtilsService.groovy
	grails-app/views/species/show.gsp