Update to include starting the BG Workers.

This is present in the upgrade.txt but not the install.txt. I'm not sure if this is the right location for noting this, but in the current version publishing events will not function w/out starting the BG workers.
Tweaks To Email Output

Small tweaks to email formatting to sync up with UI Changes.. also added event title to Subject (questionable if this is something desired globally as it would not be encrypted).
Remove Missing GPG flash if Unencrypted Email is enabled

Adds a check for a true value in GnuPG.onlyencrypted and will only display the "No GPG Key Set in your Profile" message to the user if it is missing AND MISP is set to send only encrypted email. This way orgs not using GPG will not see the banner on every index view.
Merge branch 'patch-7' of https://github.com/Xen0ph0n/MISP into hotfix-2.2.12
Merge branch 'patch-8' of https://github.com/Xen0ph0n/MISP into hotfix-2.2.12
small change to the new alert e-mail titles

- the event description in the subject shortened to 55 characters maximum.
Merge branch 'hotfix-2.2.12'