removed package metric and halstead effort. added squale as aggregation method. currently only javascript.
Merge branch 'master' into feature-squale
removed unused config templates
removed more package metric related logic.added squale aggregation to jhawk. removed predefined ranges. metrics can also be retrieved for whole project and all authors.
code churn and structure metrics available on branch level.
added measured time to branch.
real value of sloc is also saved for relative code churn measures. added sloc_squale field to file. fixed a bug where cc squale could not be computed for javascript files.
removed hk metric. not clear what it tells us. hard to maintain.
removed real world names for metrics. done by javascript.