Additional cleanup actions for Eclipse

Features

• Remove redundant modifiers
• static on interface declaration
• public, abstract on methods in interfaces
• final on private methods
• Remove redundant throws
• unchecked exceptions declared in throws statement
• Exception class that inherits from another Exception class already declared in throws statement
• Can be used both as cleanup action and save action

Requirements

• Eclipse 4.x (only tested on 4.3.x)
• Java 6