First docs draft
[#15] Reenable the Solr backend on master

It can be used against CKAN core master (eventually 2.1)
[#19] Extract thumbnail from ISO documents
[#20] Flag datasets created via the spatial harvesters via a generic extra
allow csw to fetch differen output schema
[#22] No need to add `resource_proxy_enabled` to config
[#21] Add basic GeoJSON preview and fix set up of wms preview
[#21] Add properties information to popup, lighter style
[#21] Add GeoJSON preview docs
[#21] show object in popup, fix layout
[#15] Check CKAN version when using the Solr Search backend
Merge branch 'master' of github.com:okfn/ckanext-spatial
[#22] More details about resource_proxy
Merge branch '22-update-docs'
[#21] Fix i18n calls

All the 'self' on the 'showError' function should be 'this', otherwise you
will refer to the window. Also 'this.i18n' assumes an 'i18n' key in the
module options. Looks like you are trying to pass some variables to the
string template, note the sprintf-like syntax.
[#21] Make popup table match the rest of CKAN tables
Merge branch '21-geojson-preview'
[#21] Add geojson previewer to index
[#24] Add command for pycsw integration

Based on the work by @kindly on https://github.com/kindly/ckan_pycsw_import,
adds a command to the extension that allows to export easily the spatial
datasets to pycsw. This will only work for harvested ISO datasets for the time
being.

The command can be run both via paster (in the context of a CKAN install) or
independently (eg a separate server), as it uses the API to get the datasets.

TODO docs
[#24] Add clear command to empty the pycsw table