updated the pom to point to latest core
Mark the port optional (experimental) so that bypassableInput can be connected.
Added serial version to the Counter class.
MLHR-1056 #resolve rename application to XXXXDemo convention
Merge pull request #925 from siyuanh/dt-dev

MLHR-1056 #resolve rename application to XXXXDemo convention
MLHR-1091 #resolve #comment Updating demo application names
Merge pull request #926 from sashadt/dt-dev

MLHR-1091 #resolve #comment Updating demo application names
MLHR-1092 #resolve #comment Adding environment varialbles override to application names in config.js
Merge pull request #927 from sashadt/dt-dev

MLHR-1092 #resolve #comment Adding environment varialbles override to ap...
#fix MLHR-1093
Merge pull request #929 from gauravgopi123/MLHR-1093

MLHR 1093
minor reformatting.
Merge branch 'dt-dev' of github.com:DataTorrent/Malhar into dt-dev
Changed the names of the pi demos to more meaningful names.
upgrade operator to use kafka 0.8.1.1
Merge pull request #932 from siyuanh/dt-dev

Upgrade operator to use kafka 0.8.1.1
changed to compile by doing Stats.CustomStats to Context.Counters migration
aggregated counters in the listener
fixed the bug in counter aggregation
made the aggregate functions in deduper transient