Update RedDeer version to 0.6.0-SNAPSHOT

0.5.0 is dead, long live 0.6.0
Reduced time the test server takes to start, stop etc.
Changed TimePeriod from enum to class. Fixes #547
Possibility to set text of tree item. Fixes #557
Removed deprecated usages from views&editors. Fixes #544
Browser condition using Matcher
Created RedDeerException. Fixes #574
Updated archetype version to 0.6.0-SNAPSHOT

For some reason the version plugin missed this, so I'm updating
the version separately here.
Fixed deprecated API usage warnings in workspace  (#566)
Refactored ObjectUtils. Fixes #567
Close all shells fix (fixes #575)
Adds proper waiting for Screen Recorder state change. Fixes #448

Screen Recorder Exceptions are not thrown just logged as errors
UI call chaining avoided and attempts reported (fixes #589)
Finish button is disabled by default. Fixes #559
NewServerWizardDialog inherits from NewWizardDialog instead of WizardDialog. fixes #590
Implemented support for property pages. Fixes #592
Added isVisible and isDisposed to ShellHander. Fixes #581
Initial implementation of FormText widget. Fixes #580
Added selectText to textEditor. Fixes #576
Fixed disposed widget when opening console view. #586