Issue #53 - Initial code for increasing number of lines displayed by HDFS viewer.
Issue #53 - Increase limit to 1000 lines. Fix client-side issues for receiving streamed text. Add progress bars to display before file contents or schema are displayed.
Merge branch 'master' into hdfsviewer-fixes
Issue #53 - Make max lines configurable.
Merge pull request #54 from davidzchen/hdfsviewer-fixes

HDFS viewer: Increase limit for number of lines shown when viewing a file