Removed unnecessary use of reflection for invoking methods, aprticularly with all ConfigManagers. However, I could not do it for WorkflowElementConfigManager.

*.java:
Removed unnecessary use of reflection for invoking methods. (Could not do it for WorkflowElementConfigManager)
Merged redundant try / catch blocks.
Inlined if conditions into return statements.
Worked with generics to make code compile.
Removed tons of useless comments.