FORMUS3IC_LAS3 / embb

containers_cpp: fix cpplint warnings in tests + changin name of test for blocking push and pop container

containers_cpp: add tests for blocking priority queue + get rid of namespace in blocking container class

(Merge was previously reverted accidentally. Re-applying merge to fix this.)

This reverts commit 554c76f7, reversing
changes made to fc660db0.

   - Do not use lists
   - Remove HelpScan
   - Release memory to memory manager when destructed (before that, memory had to be released by the memory manager in its destructor).
   - Avoid stdlib algorithms