feat(ui5-daterange-picker): initial implementation

[tsanislavgatev]

There is a commented method which will be deleted before merge.
Also test will be added, the PullRequest is for the functional code.

[fifoosid]

While testing I noticed the following bugs:

• There is no pointer cursor when hovering the icon for opening
• There is no hovering effect on the icon as well
• When the daterange picker is opened, clicking outside of the popover doesn't close the picker
• On the test page, on the fourth picker(DateRangePicker with minDate 01/09/2019 and maxDate 01/11/2019) user is not able to go to the next month via the arrow for the next month in the upper right corner.

[ilhan007]

Try to avoid the duplication of those 3 relatively large methods by introducing a new method with different implementation in DatePicker and DateRangePicker. I left the details inline.

[ilhan007]

I think it is good to add bigger min-width to the DateRangePicker so the data range is visible, not truncated as currently. For example we increased the min-width DateTimePicker for the same reason as it shows date and time, taking more space.

[ilhan007]

The change event is fired on clicking the first date, then on clicking the second date. Ensure it is fired on the second date only and cover the functionality with a test.

comments are resolved