Base64 Encode secrets, and allow >1 of them

Two things here:

    * key secrets are now base64 encoded strings, so we get the full key
      space

    * we can pass >1 of them in so we can rotate them

mmmkay?

Allows setting of []byte's with base64 encoded strings and [][]bytes
with comma-separated base64 encoded strings.

The first secret is used to encrypt, the rest are for decryption; if the
first doesn't work, the rest are tried in order.

The makes it possible to rotate keys.

static: update all static templates to be generic & prettier

Move gorp to its new location.

README: explain the name dex

People are going to ask, might as well get it out there.

bug: remote whitespace so eval works

Update Quay link, remove semaphore link

Godeps: remove link

go-docker: support functional tests

db: initialize bigint, boolean columns

* add linking to go-docker command and remove host networking
* add functional/repo to functional tests script

gorp hates nil.

DB Migrations for Dex

Migrations happen only in the overlord, so there's no thundering herd,
and database initialziation can be more easily controlled.

All repo tests build their tables by applying all the migrations. This
way we know our migrations are functional.

*: move original project to dex