Added spreadsheets to analyze results (relationCluster, pivots, etc). Includes the adding of Chang data.

* lib/measures.R
  Modified WorkerCosine: using counter for number of worker sentences (better for debugging, and it may deal with some special case).

* lib/simplify.R
  - Added addChangData, to add the information from to chang files to the result files (such as RelationClusters).

* lib/fileStorage.R
  - Added filetypes for:
    - relationCluster
    - pivotCFOutput
    - pivotWithSingletons
    - pivotWithoutSingletons

    - sentMetricsEvaluation
    - workerMetricsEvaluation

  - Added variable to getFilePath to select to use timestamp or not (This comes in hand, as the timestamp doesn't seem really useful in the filenames, specially for a developing environment).
  - Added norm-all|R| to the headers.
  - Added function to the headers of Behavioural filters spreadsheet (writeBehfiltersHeaders).
  * Evaluation Parts:
     - Save EvaluationMetrics: to create the evaluation spreadsheet.
     - Save WorkerMetrics: creates a spreadsheet for a set of workerMetrics (s).

* sentenceMetrics.R
  - Removing annotations where no relation was annotated (that happened, for instance, in job 196344, in what seemed like a bot attack).
  - Adding Chang data to the results (sentence, offsets, etc).
  - Added relation clusters.

* groupSentenceMetrics.R:
  - Does the same as sentenceMetrics.R, but grouping several jobs as a set.
  - This was created as a separate file, but eventually jobs and sets should be handled by only one script.

* workerMetrics.R
  - Removing annotations where no relation was annotated.
  - Added behavioural filters to the spam filtering process.

* evaluation.R and evalfunctions: small changes (min).