Main branch update

[LKay]

Todo List

• Add full support to controlled input with invalid date preserving the date fields are not editable #3
• Add basic tests unit/selenium
• Add support for multi formats by utilising extraFormats option
• Add support for debug mode and keeping open and closing dialog
• Add focus to input field when dialog is open
• Add support for disabled and enabled hours (enabledHours, disabledHours)
• Add support for displaying calendar weeks on the left (calendarWeeks)
• Add support for disabled time intervals