Feat/db migrations

Moving to a database migration tool for migrating and populating the database.

To run a migration:
 - add the XML below to your ~/.m2/settings.xml
 - (for a new database) mvn clean compile flyway:clean flyway:init flyway:migrate
 - (for an existing database) mvn clean compile flyway:migrate

```xml
    <server>
      <id>crs-local</id>
      <username>crsuser</username>
      <password>password</password>
    </server>

    <server>
      <id>crs-dev</id>
      <username>crsuser</username>
      <password>password</password>
    </server>
```

Reference: http://flywaydb.org/