[Flink-1113] clean up JQuery dependencies

This closes #178
[FLINK-1212] Fixed shell script interpreter directive

This closes #180
[FLINK-1213] Added .gitattributes to normalize EOL
[FLINK-1211] Fixed EOL character of Windows Batch files

This closes #181
This closes #179
[FLINK-1215] Increase robustness to spurious failures when creating output directories
[FLINK-1323] Refactor I/O Manager Readers and Writers to interfaces, add implementation that uses callbacks on completed write requests.

 - This change also allows for a very simple way of plugging in a synchronous version of the I/O manager.