Update heads and config for the derivatives

* Add heads for Hamara Linux, LMDE, LiMux, Meilix, OLPC,
  Open Secure-K OS, Q4OS, Septor, ThengOS, ubilinux
* Replace other heads with new heads generated on deriv.debian.net
  and downloaded by an updated review script
* Add Hamara Linux, Meilix and Septor to Planet Debian Derivatives
* Remove Tanglu, Voyage Linux and Whonix developers from Planet
  Debian Derivatives
* Update feeds for LiMux, SolydXK, VyOS and Whonix
* Convert feed URLs from http to https for Emmabuntus, Pardus and
  Serbian GNU/Linux
* Update icon size for Pardus, Parrot Security, SolydXK and Whonix