Improve pgp mime parser and various improvements

• improve pgp/mime mime parser
• add support for gpgit (https://gitlab.com/mikecardwell/gpgit)
• display more information to,cc and date when printing messages
• fix bug in time converter to display leading zeros in time for to/cc/print feature
• fix a bug where a public keys with mutliple userId's and one userId = null breaks pubKeySelect
• add/update jsdoc style comments
• fix help links (2.3.7)

Fix help links

Fix help links

fix vietnamese i18n

fix vietnamese i18n

See also: https://github.com/EmailConsortium/zimbra-vietnamese

automatically convert composed html message to text/plain

automatically convert composed html message to text/plain w/o user action

Add submit to keyserver

• Add submit to keyserver
• Fix bug where conversation view does not show pgp/mime message when there is no nested multipart message
• Rewrite handler object for Zimbra convention
• Rename Zimlet handler variable for convention
• Replace hard coded paths with getResource
• Move translations to .properties* files, and provide fallback for development mode

Remove direct send

Remove direct send

Import public keys from attachments

• Import public keys from attachments
• Bugfixes for receiving pgp/mime attachments that are not base64 encoded

Minor changes css/input

• Implement max length for input of public key fields (51000 characters as this is about the limit in Zimbra 8.7)
• Set the background color for input fields to white, in case you use a non-default theme

Update the version number

2.3.0

update version to 2.3.0

quoted_printable_decode on reply text/plain

quoted_printable_decode on reply text/plain