liquidfiles v3.2Update（之四）：new security message permissions level

Changes to Secure Messages

• We've added a new Secure Message permission level so you can send files with the permission that "Only Recipients and Recipient Domains" are permitted. If you send a secure message with this level to boss@company.com, it means that secretary@company.com and joe.user@company.com can also access the message (if boss@company.com forwards the message to them), but not sneaky@comptetitor.com.

• Added Recipient Pattern matching so you can write much more granular recipient filters who users in a specific group should be permitted to send files to.

Changes to Filedrops

• In Filedrops you can now specificy Private Message — same as in a Secure Message and the body of the message will not be included in the email to the Filedrop recipient. This will also permit Filedrops with no files attached.

• Added Password protection to Filedrops so you can require anyone that wishes to access a Filedrop to first enter a password.

• Filedrop email validation — when enabled anyone who wishes to use a Filedrop must first either login with their existing account, or go through the email validation procedure so that we know exactly who accesses a Filedrop before sending the files.

Changes to FTPdrops/FTPdirs

• FTPdrops are now session aware — if you upload 20 files in one FTP session, there will only be one email to the FTPdrop recipient with the 20 files attached.

• FTPdrops and FTPdirs can now use SSH key authentication.

• You can now disable old-school plaintext FTP if you want for FTPdrops and FTPdirs. This will leave only the encrypted protocols FTPs (FTP over SSL/TLS), SFTP or SCP.

User Account Changes

• Added Addressbook feature.

• Added a list of Filedrops a user has access to the account page.

• Users can now remove previous recipients from the recipient auto-complete.

• Added dictionary password validation.

System Changes

• Added User Activity View — so you can see all currently logged in users and what page they are currently browsing.
• Added Mail Queue page — if there's an email that cannot be delivered by LiquidFiles it will highlight each email and the reason it cannot be delivered.
• Added dictionary password validation.

Other Changes

• Changed the Email rendering to automatically insert Style/CSS tags in each affected tag to make Stylesheets more useable in more email applications.
• Reworked the Email templates including the default styles from the Foundation project.
• File Requests Multi-Use. When enabled a File Request won't expire after a single use.
• New versions of Ruby and Ruby on Rails and underlying system functions.
• Internal cleanups, route/url changes.
• Removed the disk speed test as a daily task, it's now available using the `ft disk_speed` command line when required.
• Changed database character set to UTF8mb4 (4 character UTF8) to enable storing the full UTF8 character set, i.e. Emoticons.