Added some more styles for the wiki.
This helps.
Added site import and export tools.
Also added migration to try and get dev environments in sync with
prod.
Merge remote-tracking branch 'upstream/master'
Small changes
* delayed deletion of large guides
* made it impossible to add more than 500 taxa to a guide
* tried to handle EOL 500 responses
* fixed broken Google favicon service requests
Merge pull request #269 from calonso-conabio/master

more translations
Fixin mah bugs.
Made requests for updated_since return nothing if timestamp incorrectly formatted.
Lame anti-spam measures
* prevented new journal posts for users who registered in the last 24
  hours
* added nofollow rel attributes to links
Added UUID columns to observations and observation photos.

The intent here is to provide a way for clients to specify a UUID with
new observations, so if there is trouble with the network and the
client never receives a response upon observation creation, the server
will know not to duplicate the observation the next time the client
tries to POST it.
Bugfix: occurrence status filter wasn't working for checklists.
Made places on obs/show for obscured only show default political places.
Bugfix: deleting all post observations was broken.
Bugfix: quote correction should only apply to tag attributes.
Added ability to add some custom footer content.
Tried to address some issues with synonymous taxon names
* taxa/show now uses Taxon#single_taxon_for_name
* LocalPhoto#to_observation doesn't choose a single taxon if there are
  synonymous taxa represented in the tags
Minor bugfix for guides with ungrafted taxa.
Another minor favicon fix.
Bugfix: observed_on_string with CEST time zone wasn't working.
Bugfix: performance issue on calendars/show for large places.