added tool for syncing project_626 with SIS, removed description label from assessments
Made assessments/index sort based on taxon name
Ratatosk bugfixes, added polynom parent remote lookup.
Lightened link color in threatened boxes.
Added TaxonDescribers module.

TaxonDescribers wrap APIs that provide taxon descriptions, e.g. Wikipedia,
EOL, etc. We've had similar functionality for a while, but hopefully this will
make it easier to add new ones, and configure which providers are used,
including fallback order.
Changed timeout of TaxonDescribers::Eol.
Added taxon_describers conf to the example conf.
Merge branch 'master' into i18n

Conflicts:
	app/views/taxa/_amphibiaweb.html.erb
	app/views/taxa/_description.html.erb
	lib/wikipedia_service.rb