subscriptions 7.x-1.0-beta4

This is BETA4 of Subscriptions for Drupal 7.

BETA4 provides a sizable number of bug fixes and minor missing features that have accumulated since BETA3. BETA3 is running on 800+ known sites with very little issues and we expect BETA4 to be the last beta version before the release candidate. Be sure to test it thoroughly if you want to deploy it on a production site, and please do provide feedback (both good and bad!) in the issues queue. See #1172646-22: Subscriptions for D7 for details.

BETA4 has the following requirements:

1. Drupal 7.13 or later,
2. Mail Editor 7.x-1.0-beta3 or later,
3. Token 7.x-1.1 or later
4. Be sure to run update.php after installing it!

Upgrading from any ALPHA version: see the BETA1 release note for important information.

Changes since BETA3:
- Fix subscriptions_blog_ui.module.
- #1572354: Abort subscriptions_mail_update_7000() if the module is disabled.
- #1489044: Update the README.txt file.
- Fix some minor translation issues.
- #1585516: Remove all arg() calls, which caused issues with non-standard paths.
- Replace $_GET['q'] with current_path(), for D8.
- #1015320: Check for $base_url errors during cron, too.
- #1348764: PostgreSQL GROUP BY quirk when creating or saving nodes.
- #1338506: Avoid auto-subscribing users that don't have the 'subscribe to content' permission.
- Clean up the Mail Editor link.
- #1249502: Add a link to the user list for bulk subscribe/unsubscribe.
- #1249502: Fix interference of default subscriptions with bulk subscribe/unsubscribe.
- #1490034: PostgreSQL GROUP BY quirk, still on Threads/Pages page.
- #1485764: PostgreSQL kludge on Threads/Pages page.
- #1485546: Fix #markup porting errors.
- #1249502: Implement bulk subscribe and unsubscribe.
- #1482720: PostgreSQL does not have IF(), use CASE instead.
- #1430446 by DamienMcKenna: Add more hook_alter calls.