Fixes toString return value of MinAggregationFunction

  - all actions evaluate the target JobManager option
  - all actions evaluate YARN files pointing to the job manager
  - tests cover more cases

  - Add degree of parallelism option (run and info)
  - Simplify options (-j and -a not needed any more)
  - Fix corner cases with YARN
  - Many tests

Operator now has an OperatorInformation that holds TypeInformationS for
output types (and input types for unary and binary operators).

This touches a LOT of stuff but will allow the removal of the separate
JavaAPI plan operators and other redundant code.

There is a new RecordTypeInfo that operators create behind the scenes.
The *Source and *Sink operators are now Record specific as to not break
existing programs. There are agnostic base classes with the *Base
suffix. Same is true for the iteration operators. Those operators and
sources/sinks are now in stratosphere-java, only the agnostic ones are
in stratosphere-core.

This was done by Stephan, I squashed it into one commit to make it
easier to see the changes in one place:

Clean up merge with "type information on common operators" branch
  - re-added semantic annotations (API specific)
  - Correct mixup in imports
  - Improve generic typesafety
  - Fix a lot of warnings
  - Add docs / fix doc errors
  - Improve iterator usage in unwrapping cogroup

remove reading from files from WC

source should now build without the presence of a .git directory
included the quickstart-archetypes into the main project.

Add check that solution set is joined with on correct keys.