HydraConnect refactor

[ebenenglish]

So here's the refactor based on our discussions at Hydra Connect and on the Blacklight-development list. To summarize, the main changes are:

• add catalog#map view which displays all objects in Solr index with geospatial data
• catalog#index map view uses facet data to populate map, so all results are immediately viewable (rather than just current page's worth of items)
• maplet widget available for catalog#show view
• use GeoJSON to store coordinates with placenames in Solr
• marker popups display location name (or coordinates) and link to search params (rather than displaying results in the map view itself)
• marker clusters/markers display number of hits, rather than locations
• search control on map allows search for all items within current map window bounds
• map bounds and zoom are set dynamically when more than one location displayed on map
• add spatial search functionality to Blacklight
• render spatial constraints in catalog#index

Note: there are a handful of tests that are 'pending' because I couldn't get them passing despite extensive effort. But, they seemed important so I left them in -- hopefully someone can get these working?

Other note: I haven't updated the version. Let me know if that's something I should be doing before submitting the PR.

Thanks for everyone's patience on this!

[mejackreed]

This seems like cruft here. Is it necessary?

[ebenenglish]

Nope, leftover from some experimentation I was doing. Will remove.

[ebenenglish]

I pushed up a commit to address the gemspec/Rspec issues you commented on.

[mejackreed]

@ebenenglish great thanks. Also it looks like it will also need a rebase (merge conflicts). Can you please do a rebase off of master and then push back up?

[ebenenglish]

Rebase done; looks like build failing due to a few tests failing with Ruby 1.9.3. Are we still supporting this version of Ruby? If so I'll see if I can get these working...

[ebenenglish]

All tests should now be passing in Ruby 1.9.3. Latest build failed under 2.2.0 and 2.0.0 (but passed for 2.1.0 and 1.9.3) because of a weird Poltergeist timeout error:

Capybara::Poltergeist::TimeoutError:

Timed out waiting for response to {"name":"visit","args":["http://127.0.0.1:35506/catalog?q=korea\u0026view=maps"]}. It's possible that this happened because something took a very long time (for example a page load was slow). If so, setting the Poltergeist :timeout option to a higher value will help (see the docs for details). If increasing the timeout does not help, this is probably a bug in Poltergeist - please report it to the issue tracker.

Not sure if this is a random momentary glitch or what, but this didn't come up in previous builds, and all tests are passing on my end.

[mejackreed]

Ok removing jruby and 1.9.3 from travis with #57 ... rerunning travis to see if I can get it to pass.

[mejackreed]

@ebenenglish Do you have this deployed somewhere I can play with? Thanks!

[ebenenglish]

Yes, it's been deployed on the Digital Commonwealth production site:

• 'Browse everything' map view
• Map view for search results
• Maplet in catalog#show view

The deployment is basically "out of the box" except for the BlacklightMapsHelperBehavior#link_to_placename_field method, which I'm overriding locally to deal with converting state abbreviations ("NV") to their full names ("Nevada").