disable uploading 'stratosphere-dist' to dopa server
Maven and build changes
- use "build" profile of maven, to avoid any download progress information
- Reduce logging verbosity of javadoc-plugin
- instruct maven-eclipse-plugin to download sources (so that users can debug through our code without actively downloading the code)
- Remove warnings in eclipse from the new git-commit-id maven plugin
hopefully fix bug with version detection using maven for yarn deployment to sonatype
Improve deployment on travis
CSV Parsers fail on inputs that cannot be parsed instead of silently ignoring the lines.
Changed default testing log verbosity for TestBase.
Fixes #242. Excludes nephele-examples, pact-examples, and pact-scala-examples from distribution lib folder
Fix and spell correct version change script.

[ci skip]
Add support for using arbitrary Pact Value classes in scala frontend

Also add checks in key selector extraction to check whether the selected
fields can actually be part of a key.
Rename DataStream to DataSet
Remove TODOs concerning Sequential*Format in scala source
Rename scala input formats

*DataSourceFormat -> *InputFormat
Rename scala output formats

*DataSinkFormat -> *OutputFormat
Clean up imports in scala examples