dependencies: bumped beautifulsoup4 to 4.6.1

caches: use repo.lru based Dict cache. This LRUDict uses Timing Algo to not have to use locking for consistency.

nix-shell: set the LOCALE_ARCHIVE paths so it uses nix-es local-archive instead of the system one.

dependencies: bumped SVN to 1.10.2 release

dependencies: bumped GIT to 2.17.1 release

setup: use pip10 compatible setup code.

dependecies: use our custom configobj for all projects for consistency.

exceptions: allow error tracking and exception storage on vcsserver.

exceptions: use new wrapper that store the org exception inside the newly generated exceptions. This will allow nicer debug and tracking capabilities.

exceptions: removed unused traceback formatting.