Add dep dependency management

This commit introduces dependency management using
https://github.com/golang/dep to make builds reproducible.

.gitignore

@@ -7,3 +7,4 @@
 .idea/
 cacert-boardvoting
 config.yaml
+vendor/

Gopkg.lock

@@ -0,0 +1,141 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  branch = "master"
+  name = "bitbucket.org/liamstask/goose"
+  packages = ["lib/goose"]
+  revision = "8488cc47d90c8a502b1c41a462a6d9cc8ee0a895"
+
+[[projects]]
+  name = "github.com/Masterminds/semver"
+  packages = ["."]
+  revision = "517734cc7d6470c0d07130e40fd40bdeb9bcd3fd"
+  version = "v1.3.1"
+
+[[projects]]
+  name = "github.com/Masterminds/sprig"
+  packages = ["."]
+  revision = "9526be0327b26ad31aa70296a7b10704883976d5"
+  version = "2.12.0"
+
+[[projects]]
+  name = "github.com/aokoli/goutils"
+  packages = ["."]
+  revision = "3391d3790d23d03408670993e957e8f408993c34"
+  version = "v1.0.1"
+
+[[projects]]
+  name = "github.com/go-sql-driver/mysql"
+  packages = ["."]
+  revision = "a0583e0143b1624142adab07e0e97fe106d99561"
+  version = "v1.3"
+
+[[projects]]
+  name = "github.com/gorilla/context"
+  packages = ["."]
+  revision = "1ea25387ff6f684839d82767c1733ff4d4d15d0a"
+  version = "v1.1"
+
+[[projects]]
+  name = "github.com/gorilla/securecookie"
+  packages = ["."]
+  revision = "667fe4e3466a040b780561fe9b51a83a3753eefc"
+  version = "v1.1"
+
+[[projects]]
+  name = "github.com/gorilla/sessions"
+  packages = ["."]
+  revision = "ca9ada44574153444b00d3fd9c8559e4cc95f896"
+  version = "v1.1"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/huandu/xstrings"
+  packages = ["."]
+  revision = "3959339b333561bf62a38b424fd41517c2c90f40"
+
+[[projects]]
+  name = "github.com/imdario/mergo"
+  packages = ["."]
+  revision = "3e95a51e0639b4cf372f2ccf74c86749d747fbdc"
+  version = "0.2.2"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/jmoiron/sqlx"
+  packages = [".","reflectx"]
+  revision = "d9bd385d68c068f1fabb5057e3dedcbcbb039d0f"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/kylelemons/go-gypsy"
+  packages = ["yaml"]
+  revision = "08cad365cd28a7fba23bb1e57aa43c5e18ad8bb8"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/lib/pq"
+  packages = [".","oid"]
+  revision = "e42267488fe361b9dc034be7a6bffef5b195bceb"
+
+[[projects]]
+  name = "github.com/mattn/go-sqlite3"
+  packages = ["."]
+  revision = "ca5e3819723d8eeaf170ad510e7da1d6d2e94a08"
+  version = "v1.2.0"
+
+[[projects]]
+  name = "github.com/op/go-logging"
+  packages = ["."]
+  revision = "b2cb9fa56473e98db8caba80237377e83fe44db5"
+  version = "v1"
+
+[[projects]]
+  name = "github.com/satori/go.uuid"
+  packages = ["."]
+  revision = "879c5887cd475cd7864858769793b2ceb0d44feb"
+  version = "v1.1.0"
+
+[[projects]]
+  name = "github.com/ziutek/mymysql"
+  packages = ["godrv","mysql","native"]
+  revision = "e08c2f35356576b3c3690c252fe5dca728ae9292"
+  version = "v1.5.4"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/crypto"
+  packages = ["pbkdf2","scrypt"]
+  revision = "81e90905daefcd6fd217b62423c0908922eadb30"
+
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/net"
+  packages = ["context"]
+  revision = "57efc9c3d9f91fb3277f8da1cff370539c4d3dc5"
+
+[[projects]]
+  branch = "v3"
+  name = "gopkg.in/alexcesaro/quotedprintable.v3"
+  packages = ["."]
+  revision = "2caba252f4dc53eaf6b553000885530023f54623"
+
+[[projects]]
+  name = "gopkg.in/gomail.v2"
+  packages = ["."]
+  revision = "41f3572897373c5538c50a2402db15db079fa4fd"
+  version = "2.0.0"
+
+[[projects]]
+  branch = "v2"
+  name = "gopkg.in/yaml.v2"
+  packages = ["."]
+  revision = "eb3733d160e74a9c7e442f435eb3bea458e1d19f"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "9d2b82c5d23650eb62410786c7b529264a0d15172734bbef3ffb1c8a4ac4880f"
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,54 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+
+[[constraint]]
+  branch = "master"
+  name = "bitbucket.org/liamstask/goose"
+
+[[constraint]]
+  name = "github.com/Masterminds/sprig"
+  version = "2.12.0"
+
+[[constraint]]
+  name = "github.com/gorilla/sessions"
+  version = "1.1.0"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/jmoiron/sqlx"
+
+[[constraint]]
+  name = "github.com/mattn/go-sqlite3"
+  version = "1.2.0"
+
+[[constraint]]
+  name = "github.com/op/go-logging"
+  version = "1.0.0"
+
+[[constraint]]
+  name = "gopkg.in/gomail.v2"
+  version = "2.0.0"
+
+[[constraint]]
+  branch = "v2"
+  name = "gopkg.in/yaml.v2"