[#2034] sort and limit in subqueries before unions
[#2034] real subqueries required for limits inside unions
[#2034] distinct now required before offset+limit
Merge remote-tracking branch 'origin/master' into 2034-activity-query-performance-1
[#2034] apply distinct after union
[#2034] select_from now called select_entity_from in sqlalchemy 0.9
[#2105] reset validator cache in update_config, not on plugin load
[#1318] Don' show the full help docstring on API calls

Instead show a link to a new `help_show` action that displays it.
Add comment for non-obvious slice operator.
[#1951] Host all images locally to avoid SSL errors and network problems
[#1951] Use url_for_static everywhere
[#2123] namespace boilerplate for ckanext template
[#1982] Add max-height to text resource view
Merge branch '2034-activity-query-performance-1' of https://github.com/wardi/ckan into wardi-2034-activity-query-performance-1
Merge branch 'wardi-2034-activity-query-performance-1'
Merge branch '1982-textview-scrollbar' of https://github.com/brew/ckan into brew-1982-textview-scrollbar
Merge branch 'brew-1982-textview-scrollbar'
Merge branch '2123-namespace-boilerplate' of https://github.com/brew/ckan into brew-2123-namespace-boilerplate
Merge branch 'brew-2123-namespace-boilerplate'
Merge branch '2105-n-ivalidators' of https://github.com/wardi/ckan into wardi-2105-n-ivalidators