Integer slider overflow max 

If the integer slider value exceeds the 32 bit limit, then it resets the value to 0.

This fix will reset the value to 2^32 - 1, if the value exceeds the 32 bit limit. 
For Maximum the limit is set to 2,147,483,647 and for minimum the value is set to -2,147,483,648.

int.TryParse will return false, if there is an overflow or if the value is not a number. For all false condition, now
the function checks whether every character is a number. If the number is negative, the check starts from first position instead of zero-th position.  Depending on the sign, the function returns a max or min value.

- [ ] @pboyer