Make validation popup transparent on mouseover.
Close validation popup on click.
Increase transition time a bit.
Merge pull request #1017 from grokys/vaidation-popup

Make validation popup transparent on mouseover.
Fixed an issue that if Min=1000, user selects all text and enters 1, then the NUD gets immediately value 1000.
Now 1 still remains (because the user will enter further characters) and internal value is 1000.
When the Value that the user is inserting is bigger than 1000 then the Value is set to that number.
When the Value that the user is inserting is lower than 1000 then Value not set and the text in NUD remains at that value (only when manual inserting, not with +/-) .At LostOfFocus the text gets updated to the corresponding Minimum.
added ButtonCommandParameter to TextBoxHelper
Merge pull request #1027 from xxMUROxx/hotfix/NumericUpDown

Fixed an issue when Minimum is set > 0 and user enters characters that are less then the maximum
Merge pull request #1028 from badbredren/master

added ButtonCommandParameter to TextBoxHelper