Converting ParseTree to DetailNode.
WriteAuthorCheck use DetailNode instead of JavadocAst
Edited grammar to not have non-terminal nodes without children. getTokenType() method doesn't use 'instanceof' operator.
Edited message 'missed html close tag'
Minor
Grammar fixes. Added new token types to JavadocTokenTypes
Grammar has been moved to main/resources folder
Moved all methods and static block from JavadocTokenTypes to JavadocUtils
Fix grammar. Stop parsing on error. New error on closed singleton tag.
Edited message for missed html tag
One token type 'description' for all javadoc tags. One node type for all javadoc tags - JAVADOC_TAG. Extended support of xhtml tags.
Some order in JavadocTokenTypes
Deleted MISC node
Deleted JavadocAST