Merge pull request #8 from BObereder/development-accessibility

added accessibilityLabels
Implemented selector form section
Merge branch 'master' of github.com:akolov/Bureaucracy
Change initialization and property observers
made segmentedControl public in SegmentedFormCell, added accessibilityLabel to SelectorGroupFormField, added accessibilityTest
Merge branch 'master' into development-accessibility

Conflicts:
	Bureaucracy/Fields/SelectorGroupFormField.swift
fixed changes, added test for SelectorGroupFormField