ForumBackup 自动备份 1.2.01

- Fixed issue of cron tasks being rewritten when addon is updated.
This fix includes removing the addons original cron tasks, and replacing them with cron tasks assigned to an unassigned addon. This way,
the cron tasks won't be removed and recreated when the addon is updated. The new cron tasks are removed when the addon is uninstalled.

- Allow the addon's "inactive board message" to function like the default XenForo "inactive board message". It now supports same tags as the default.
- If no custom "inactive board message" is entered, it will default to use the default inactive board message.
- Added the board title to the "From" name on the email that is generated when the backup has completed.

- Fix a bug where code backups didn't honor how many backup copies to keep
- Add additional debug comments to help identify problems with file creation.

• Added option for code backups to exclude specific items relative to the forum root.
• Added support for the ForumBackup DropBox add-on

- Fixed issue with database passwords with special characters generating empty backups.
- Added asserts for the exec() php function prior to doing any backups. This is done at installation time, but on a host/server change, this check wasn't being done.