Newer versions of the sbt and jdk are not compatible with old assignments

[HoOngEe]

I've tried to get jdk 7 and sbt 0.12.4 as the project configuration says. However, older versions of sbt are not available on the official website. When using higher versions, the %% operator resolves the higher version of Scala so that the library dependencies link to wrong paths.
Even further, I tried re-link the dependencies to the hard coded right paths by searching on the internet. However, the sbt came to an end with compile errors. I'm suspecting some breaking changes have applied to sbt and Scala. I totally lost my way to a solution.

1. I'm going to carry out more tries through other directions.
2. In the worst case, I'm going to prune unnecessary codes for submission.

[HoOngEe]

I concluded the issue can not be resolved easily unless I go back to the older version of all dependencies. However, such a change is meaningless and weird. I'm going to focus not on trivia but on the correct implementation.