Bugfix: Slave zones honour allow transfer

Fix bug where slave zones didn't honour the allow-transfer setting and wrote "none" in the config at all times
we do not need digests for Exchange-peers
add a hint for autodiscover over HTTP
Revert "add a hint for autodiscover over HTTP"

This reverts commit 9485b386dba7a4fbdfbc7941071cd4574f24c91c.
autocreate http-reverse for autodiscover
added proxy configuration to autoconfigbackup
removed: closing php tags
Tabs to spaces and merged changes from crypt.php into crypt_acb.php
Requested changes
Add missing equals sign in front of string value.
Fix so we don't lose typed field values when selecting an Alias.
Revert to old behavior for rule forced enable/disable icon.  Add save msg.
Fix Port Scan select alias behavior to not lose previous values.
Bump Snort GUI package version to v3.1.2 -- bug fixes.
Fix-up URLs for Snort rule subscription sign-ups.
Include Link-Local address in HOME_NET and default Pass List
Fix typo in hyperlink to GLOBAL SETTINGS tab.
Fix error preventing rules rebuild when duplicating an interface.
More fixes for Link-Local addresses in HOME_NET and Pass Lists.
Fix-up reverse DNS lookup and table sorting for pfSense 2.2.