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.
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

trans
Fix migration error on database with zero IDs
Fix Mocha deprecation error
Change DEFAULT_SRID from -1 to 0

Fixes an annoying error message that gets spewed out during rspec runs:

NOTICE:  SRID value -1 converted to the officially unknown SRID value 0
Fix deprecation warnings in ObservationsController
We don't use stories.
Minor bugfix with recent taxon change validation.
Bugfix: observed_on_string parsing was broken for some formats.
Minor fixes.
Merge pull request #169 from md5/dev-fixes

Dev fixes
Numerous small fixes
* BUGFIX: photo selector on taxa/show wasn't allowing unlicensed
  photos
* GuidePhoto only auto-adds licensed photos
* Data Quality Assessment shown by default, visibility stored in
  session
* check list auto taxon adding moved out of slow queue
* wikipedia style fixes and removed video
* BUGFIX: uploading multiple photos after CSV obs upload was broken
Made it impossible to create check lists for large places.