Add possibility to disable displaying file and file revision information on report

Sometimes, it is better to not display all the information on the HTML report, such as file and file revision information, which makes the report unnecessarily long and less readable. For example, in our company, we would like to use this report as a changelog not only for developers, but also for testers, etc., who really don't care about concrete changed files and their revisions.
This feature is especially useful, if used in connection with feature described in MCHANGELOG-118.

I am submitting a very simple patch that implements this feature by providing one new configuration parameter:

• displayFileAndRevInfo - If true, file and file revision information is displayed for each SCM entry.
  • default value: true - so current behavior of report generation will not be changed, unless explicitly specified in configuration
    Patch also contains integration tests that test if report is created, if this param is used.

Example report without file and file revision information is displayed on attached screenshot.