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Fix Spanish showing up for "lowest_rank" under en locale
Merge pull request #165 from md5/patch-1

Fix Spanish showing up for "lowest_rank" under en locale
Bugfix: EOL photo selector was not getting photos past first page.
Added option to replace existing content for EOL guide import. Also:

* trying to add eol content without selecting taxa should provide a
  decent error message
* loading notice when adding eol content
* cancel button on guide_taxa/edit
Numerous small changes to print layouts and help text for guides.
Merge remote-tracking branch 'upstream/master'
months translations on search observations
Added PUT /observations/:id/viewed_updates.
Added UI for adding taxonomic and color tags to guides.
Attemped bugfix for taxon swaps without inputs or outputs.
Added link to developers page, minor translation.
Bugfix: control width of Google favicons.
Merge pull request #163 from calonso-conabio/master

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