! Protecting Wedge against potential array_combine() errors. (ManageServer.php)

* Just a couple of new lambda functions. Because I love these. (Aeva-Embed.php)
! Hiding the Continue button in case of an error during installation was more of a problem than a solution. Reverting this. (install.php)
! After all these years, Safe mode is still a PITA. (Class-WebGet.php)
- Removed some theme code. (Admin.php, Themes.template.php)
  - But... It's so ugly..!
  - It's for your own good, Nao.
  - Are you sure..?
  - Yes.
  - But it's temp code... I hate committing temp c...
  - SHUT UP!!!
! Apparently, for some reason beyond my understanding, the installer's INSERT functions will choke on tables that have text fields, unless you explicitly set a value for these fields (even if empty). I don't get it. But I double-checked, and all other tables were already doing that, so I guess it's a known problem. Buh-bye. (install.sql)