fixed a typo and reorganized imports.
Merge branch 'master' of github.com:DataTorrent/Malhar
removed misleading comment.
Fixed warnings related to raw type and useless System.out.println statement.
removed unused imports.
Cleaned up the LocalFSInputOperator so that the duplicate functionality is removed.
Merge branch 'master' of github.com:DataTorrent/Malhar
Merge branch 'master' of github.com:DataTorrent/Malhar
Merge branch 'master' of github.com:DataTorrent/Malhar into my_master
Merge branch 'master' into my_master
fix #MLHR-645 recovery window id metric
MLHR-647 #close Fix the incompatibility between Malhar0.9.3 and
platform0.9.3
Create 0.9.3 development branch.
Merge pull request #632 from siyuanh/fixkafka0.9.3

MLHR-647 #close Fix the incompatibility issue Malhar and platform(0.9.3)
Merge branch 'master' of https://github.com/nickholub/Malhar
fix #MLHR-669 Visual Data Demo App
fix #MLHR-669 Visual Data Demo App
fix #MLHR-669 random data for line chart
fix #MLHR-669 random data for line chart
fix #MLHR-669 random data for line chart