Removed unused decompiler references
Reenabled decompiler
Merge pull request #130 from jsight/enabledecompiler

Reenable the decompiler module and remove the unused dependency from the config addon on decompiler
Mark Java files as JavaFileModel instances
Some refactorings of JavaFileModel
WINDUP-118: First attempt at cleaning up the JavaClassModel relationships, plus some other cleanup
WINDUP-118: Fix some bugs in the JavaClassService.getOrCreate() and its usage. Also expanded metadata added during BCEL parsing
WINDUP-102: Core models created for migrating rules that registers java hints/whitelists/classifications.