Basic structure for overall Experiment validating.
Merge remote-tracking branch 'origin/balhar' into balhar

Conflicts:
	src/main/java/cz/zcu/kiv/eegdatabase/wui/ui/experiments/AddExperimentEnvironmentForm.java
	src/main/java/cz/zcu/kiv/eegdatabase/wui/ui/experiments/AddExperimentScenarioForm.java
	src/main/java/cz/zcu/kiv/eegdatabase/wui/ui/experiments/WizardTabbedPanelPage$TabPanel2.html
	src/main/java/cz/zcu/kiv/eegdatabase/wui/ui/experiments/WizardTabbedPanelPage.java
Fields for tested subjects and co-experimenters are not required anymore.