[#29] Use new precedence feature for previews.
[#29] Fix missing variable
[noticket] Notes about CSW limitation. Example GetRecords.
[#31] Check if sort parameter exists
[#28] Fix function name
[#32] Do not set height to avoid scrollbars if container is less than 600px
[#26] Fix broken markers on debug mode
[#27] Remove spatial_query_widget mention from README
Merge branch '29-new-preview-interface'
[#32] Add note about resource_proxy
Modify OWSLib requirement to prevent conflicts

We will target a specific changeset of OWSLib for the time being, just until
there is a proper release which includes geopython/OWSLib@4b0a62cd.

Basically OWSLib required python-dateutil==2.1, which is intended for
Python 3 and conflicted with the version used by CKAN core.
[#35] Ignore auth when using site_user
[#34] Update lxml requirement

Latest OWSLib introduces changes that require lxml>=2.3.
Merge branch 'master' into 24-pycsw-integration-command

Conflicts:
	README.rst
[#24] Minor tweaks in README
[#24] Let pycsw define and create the table