Fix Drupal coding standard and Drupal Practice

Missing class doc comment
(Drupal.Commenting.ClassComment.Missing)

Expected 1 space after IF keyword; 0 found
(Drupal.ControlStructures.ControlSignature.SpaceAfterKeyword)

Expected 1 space after FOREACH keyword; 0 found
(Drupal.ControlStructures.ControlSignature.SpaceAfterKeyword)

Concat operator must be surrounded by a single space
(Squiz.Strings.ConcatenationSpacing.PaddingFound)

Short array syntax must be used to define arrays
(Drupal.Arrays.DisallowLongArraySyntax.Found)

TRUE, FALSE and NULL must be uppercase; expected "NULL" but found "null"
(Generic.PHP.UpperCaseConstant.Found)

Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
(Drupal.Commenting.InlineComment.InvalidEndChar)

Concat operator must be surrounded by a single space
(Squiz.Strings.ConcatenationSpacing.PaddingFound)

Line exceeds 80 characters; contains 85 characters
(Drupal.Files.LineLength.TooLong)

The array declaration extends to column 125 (the limit is 80). The array content should be split up over multiple lines
(Drupal.Arrays.Array.LongLineDeclaration)