PEL-395: Fixing zeppelin-web buil on CentOS 6.5
Merge pull request #127 from NFLabs/fix/zeppelin-web-centos-build

PEL-395: Fixing zeppelin-web build error on CentOS 6.5
Add zeppelin foreground script
Handle complex type
Catch interpreter exception and propagate to GUI
Merge pull request #128 from NFLabs/feature/zeppelinForeground

Add zeppelin foreground script
Merge pull request #129 from NFLabs/handle_complex_type

Handle complex type