Adjust whitespace to conform with style conventions

The following conventions have been applied:
* Fix indentation levels
  Rules: (indentation) Indentation, (regexp) RegexpSinglelineJava
* Always use operators at the beginning of a new line if there is a line
  break.
  Rule: (whitespace) OperatorWrap
* Always use empty lines between method declarations.
  Rule: (whitespace) EmptyLineSeparator
* Always use new line between annotation and field/method declaration.
  Rule: (extension) AnnotationLocationMostCases
* Additional rules:
    * (whitespace) ParenPad
    * (whitespace) GenericWhitespace
    * (blocks) LeftCurly
    * (extension) RightCurlyAlone