GEOMESA-384 removing commons-net 2.2 in favor of 3.3

fixing comments in pom
excluding maven scm jars
removing jxpath
fixing version of objenesis
GEOMESA-389 Refactor SimpleFeatureEncoder

Separated encoder trait from decoder trait
Merge branch 'accumulo1.5.x/1.x' into f_ds_window2
unused components
removed unused encoder
Added scopt and shaded jar and more documentation