Merge pull request #51 from VWoeltjen/master

[Scenario] Remaining bug fixes for followup #1
[Scenario] Track revision when building distribution
Merge pull request #52 from VWoeltjen/revision

[Scenario] Track revision when building distribution
[Scenario] Fix comparator in TimelineView

Previously introduced sorting of nested Activities
in TimelineView to detect situations where they
overlapped. Comparator used for this sort included
a possible divide-by-zero; replaced by Math.signum
here.
Merge pull request #53 from VWoeltjen/comparator

[Scenario] Fix comparator in TimelineView
[Scenario] Read commit info from filter.properties

Continuous build server does not like having git rev-parse
invocation in the command line arguments of the build, so
commit hash is written to and read from a temporary file,
filter.properties, instead.
Merge remote-tracking branch 'nasa/master'