sharedblocks 7.x-2.0-beta3

Changes since 7.x-2.0-beta2:

• #2105849: Add a 'Configure' link to admin/structure/sharedblocks/publish from the modules page.
• #2180951: Disallow subscription blocks from being shared by adding a 'no publish' flag to hook_block_info().
• #1580248: Standardize delivery of block content via JSON as rendered HTML instead of render API array.
• Allow new subscription blocks to be added directly from the block UI. Unified block UI forms and exportable UI forms.
• #2180945: Fixed shared blocks should always render as the anonymous user.
• Added watchdog() logging for when a request to a shared block fails.
• #2180523: Added security tokens to the published block URLs. Existing installs will have this security check disabled until manually enabled.
• Split helper code into sharedblocks.publish.inc and sharedblocks.subscribe.inc.
• #2181087: Fixed shared blocks should be tricked into thinking the current page is the homepage.
• #2181089: Added ability to apply a 'sharedblocks' text format to the shared block output. Abstracts the convert relative to absolute URL functionality to the filter system (and Pathologic module).
• Now that subscribed blocks are marked as DRUPAL_CACHE_CUSTOM, sharedblocks_cron() is no longer necessary.
• Moved administration page to sharedblocks.admin.inc.
• Fixed drupal_json_decode() should be used instead of json_decode().
• #967456: Fixed sharedblocks_publish_block() should use drupal_json_output().
• #2180929: Filter block variable before saving to remove un-published blocks.
• #2180521: Fixed block rendering skips hook_block_view_alter() by adding a seperate helper function to render and process the block that mimics the code in _block_render_blocks().
• Added the DRUPAL_CACHE_CUSTOM flag to sharedblocks_block_info() to indicate that we are handling the caching for these blocks.
• Fixed block module was not listed as a dependency.
• Added sharedblocks_publish variable checking to sharedblocks_publish_block_access().
• Added an access callback for the sharedblocks/%/% path.