Remove the scriptz submodule and hard-commit the files.

The submodule is a leftover from when this project was intended to work
as a series of microservices. It was meant to provide common
functionality to the builds for every microservice. That's no longer the
case, and the submodule is a pain-point both in on-boarding new
developers and running the Docker build.

script/include/helper_functions.inc.sh

@@ -0,0 +1,55 @@
+# helper_functions.inc.sh: General helper functions
+
+# Check pip to see if the given package is installed
+# (returns 0 if installed, 2 if not installed)
+check_system_pip_for () {
+  local package_name="${1}"
+
+  # Use 'pip list' to see if the requested package is already installed
+  pip list --format=columns --disable-pip-version-check | \
+    grep -Fe "${package_name}" >/dev/null 2>&1
+  return $?
+}
+
+pip_install () {
+  local packages="${1}"
+  local flags="${2}"
+
+  run_command "pip install ${flags} ${packages}"
+  return $?
+}
+
+# Used whenever an environment sensitive command is being run
+run_command () {
+  local cmd="${1}"
+
+  pipenv run ${cmd}
+  return $?
+}
+
+migrate_db() {
+  # Run migrations
+  run_command "alembic upgrade head"
+}
+
+seed_db() {
+  run_command "python ./script/seed_roles.py"
+}
+
+reset_db() {
+  local database_name="${1}"
+
+  # If the DB exists, drop it
+  set +e
+  dropdb "${database_name}"
+  set -e
+
+  # Create a fresh DB
+  createdb "${database_name}"
+
+  # Run migrations
+  migrate_db
+
+  # Seed database data
+  seed_db
+}