merging HACKING.mds
starting to build chroot-based dev environment
added chroot dev user, restart_servers.sh script uses those users instead of root
merged chroot scripts into a single bash script with commands. bundle ubuntu signing key to verify ubuntu packages in chroot jail.
make sure debootstrap and schroot are installed, fix test command
Merge remote-tracking branch 'origin/hacking-updates' into chroot
moved chroot instructions into HACKING.md
renamed chroot dir to dev_files
chroot: fixing permissions after setup_dev.sh, since tests are first run by root user
chroot: unmount filesystems better, and require chroot for most commands
chroot: added clean command
Adding count of documents and messages in index for journalists
Adding downloaded column to submissions table
Marking files as downloaded in the db when they are downloaded
Add a link to download unread messages
Swap out link with unread: 0 on download
Merging master into issues/371
Merge pull request #379 from Hainish/issues/371

Resolves #371
Merging develop into issues/372
Changing bulk_download api per Garretts request