Add docblock indent fixer
feature #790 Add docblock indent fixer (ceeram)

This PR was squashed before being merged into the 1.3-dev branch (closes #790).

Discussion
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Add docblock indent fixer

Ensure that docblocks for class methods and attributes are indented if present
EDIT: Ensure that any docblock uses the same indentation as the documented subject, regardless the type

Commits
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f1edd5a Add docblock indent fixer