updating bitcoin to 0.9.2.1
fixing whitespace
plowshare: version bump

From #3301.
Add taskserver package (close #3269)
zotero: version bump 4.0.21.1 -> 4.0.21.2
firefox: bring back version 30.0 for zotero
zotero: add check to detect xul version breakages
plan9port: fix eval (license typo)
nixos-container destroy: Remove gcroots
Don't silently ignore errors from the activation script
vim-pluings: Fix missing hash
Added a few VIM plugins.
nixos-container destroy: Make idempotent
Containers: Set up /etc/resolv.conf

Systemd-nspawn is supposed to do this, but doesn't if any of the
--network-* flags are used.
pleasant ruby
some improvements
add libs to GEM_PATH
stop using gross dependency resolution
allow importGems to override cp args
include patches