Merge v0.13.0 into master

[eve-seat]

NB Upgrade notes

Please ensure you read and follow docs/upgrade_specifics/upgrading_v0.12.x_to_v0.13.0.md after following the usual upgrade guide! An important email related configuration change was made.

Fixes:

• API application access usernames are now completely randomly generated instead of attempting to make use of the user provided application name.
• Fix a bug in SeatGuard where groups with no permissions were causing exceptions when trying to unserialize empty strings.
• Multiple other SeatGaurd fixes and optimizations.
• Remove unpublished skills from the skills that can be searched for (thanks @LunarchildEU)
• Fix multiple datatables sorting problems (thanks @LunarchildEU)
• Refactor the POS code in both the view and the controller to make it more manageable in the long term.
• Move the SMTP Port and Encryption configuration to the .env.php file (thanks @ccatlett1984 and @warlof)
• Fix an exception namespacing problem in the corporation starbase details EVE API updater.
• Fix a case where the Corporation Customs office's view will fail with an exception (thanks @LunarchildEU)
• Fix an error when manually adding a new user and assigning them to the Administrators group (thanks @gattebury)
• Fix a security issue in the mail search functionality (thanks @LunarchildEU)
• Fix tooltips and popovers not displaying in ajax responses.

  New:

• Add an experimental seat:update command that will hopefully make future upgrades easier.
• Add a tab in the corporation members security view that will display the member/title to role mappings (thanks @LunarchildEU)
• Add some styling to SeAT emails.
• Most notifications have been revisited to have their content be more useful.
• User's can now subscribe to having notifications emailed to them using the email that they have used for their SeAT account.

... and a few other smaller UI / backend enhancements and fixes!

Release Stats:

52 commits in 73 changed files with * 3268 additions* and * 639 deletions.*