fixed chackstyle for ascii
merge
fixes#2613
Merge remote-tracking branch 'origin' into checkstyleAscii
some changes after pr review
mostly finished aggregation docs, one section missing
Fixed too long source lines
Fixed too long source lines
Added a few more Java 6 and 7 examples
Added SQL like describtion of the different available aggregations
Added a short sentence for different aggregations
Fixed titles of different aggregations
change remove() to removeBackup()
Added an example chapter
fixed anchors
Added implementing aggregations chapter
javadoc for public API in nio specifiacally serialization
fixes#2842
Merge pull request #2834 from hasancelik/checkstyleAscii

fixed checkstyle for Ascii
javadoc for public API in nio specifiacally serialization