Adds new attribute alignment to parameter contexts
Adds parameter_type to pcontext
Updates params
Merge pull request #305 from lukecampbell/params_update

Updates params
Adds CRD ops for data subscriptions
Different model for data subscriptions

 - Adds field to create_subscription
 - New association Subscription -> DataProduct (hasDataProduct)
Merge pull request #306 from lukecampbell/dp_pubsub

Adds CRD ops for data subscriptions
 add geospatial_point_center to DataProduct and FrameOf Ref to enable geo searching
Merge pull request #307 from MauriceManning/geopoint

 add geospatial_point_center to DataProduct and FrameOf Ref to enable ge...
Adds new column to parameters: precision
Merge pull request #308 from lukecampbell/precision

Adds new column to parameters: precision
Added fields to extended resource test object
Adding alerts to agent instance object
Merge pull request #309 from ifreecarve/2013-03-21_alerts

Adding alerts to agent instance object
Improved index
Updates to database init scripts
Updated events table definition
Merge branch 'master' into postgres
Added support for optional_args for get_resource_extension in RR
Update extended resources