integrate screen recorder functionality

[simonmeggle]

In some cases, a screen record of an exception would be more helpful to investigate the cause of an error.

Perhaps helpful: https://code.google.com/p/java-screen-recorder/

[simonmeggle]

Introduce properties for

• record never
• record always
• record only on exception (= recording is always done, but file is kept only in case of an exception)

[toschneck]

maybe use openCV