working on #39: adding the UITweak class with json deserialization an serialization features which can apply a configuration to the UIManager
working on #39: adding the the default tweakUI json to improve the readability of checkboxes in tables when selected
fixes #39: added the tweakUI method to the StaticSwingTools that reads the tweaks from a json file and applies it to the UIManager
Merge branch 'feature/39-tweakUI-via-json' into dev