add format to Decimal type

add format to Decimal type

fix codesniffer issue

extend the unit tests to cover new 'format'-setting

fix test

Author: saggi-dw

Diff for: _test/types/DecimalTest.php

@@ -151,14 +151,14 @@ public function valueProvider()
 
             //format string
             ['5000', '5 000', '-1', '.', ' ', true, '', '', false, ''],
-            ['5000', '5 000', '-1', '.', ' ', true, '', '', false, '%s'],
+            ['5000', '5 000.00', '2', '.', ' ', false, '', '', false, '%s'],
             ['1.7', '1.70', '-1', '.', ' ', true, '', '', false, '%01.2f'],
             ['1.7', '1.70' , '-1', '.', ' ', true, '', '', false, '%01.2F'],
             ['1.7', '0001' , '-1', '.', ' ', true, '', '', false, "%'.04d"],
             ['15', '1111' , '-1', '.', ' ', true, '', '', false, '%04b'],
             ['362525200', '3.625e+8' , '-1', '.', ' ', true, '', '', false, '%.3e'],
             ['362525200', '3.625E+8' , '-1', '.', ' ', true, '', '', false, '%.3E'],
-            ['1', '1 ' , '-1', '.', ' ', true, '', '', false, '%u'],
+            ['1', '1' , '-1', '.', ' ', true, '', '', false, '%u'],
             ['-1', '18446744073709551615' , '-1', '.', ' ', true, '', '', false, '%u'],
 
         ];