Migration from Play! Framework 2.6.x to 2.7.x

Maven-related changes

a) change Play! version from

    <properties>
        ...
        <play2.version>2.6.21</play2.version>
    </properties>

to

    <properties>
        ...
        <play2.version>2.7.0</play2.version>
    </properties>

b) if using Ebean, upgrade play-ebean dependency version to 5.0.1

c) if using Slick, upgrade play-slick dependency version to 4.0.0