spaces 6.x-3.0-beta4

It's recommended that you update to the latest versions of CTools, Boxes, Features, and Context in conjunction with this release of Spaces.

• API CHANGE Reduce the number of calls to drupal_alter() by consolidating block access check logic. See spaces_dashboard.api.php for full change docs.
• Adjustments to context controller in light of context API changes. See: http://drupal.org/cvs?commit=359614
• #776230: Spaces taxonomy: fix for bad variable in Views filter.
• Updating the implementation of viewsspacesdashboardblockaccess_alter() to match the API change.
• Remove excessive no alter flags for context alters that are now intelligently handled.
• Fixes for PHP notices.
• Fix for test failure when using blocks that use quotes in their info text.
• Fix for Views hash and special block delta parsing.
• #782226, #788142 by jerdiggity: Update API docs for drupal_alter change, fix for API docs typo.