javadoc warnings

[Wouter1]

It would be nice if we can fix the 33 javadoc warnings in the EIS project.

[Wouter1]

[WARNING] Javadoc Warnings
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:264: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:324: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:331: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:338: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:345: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:352: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:365: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EnvironmentInterfaceStandard.java:373: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EILoader.java:115: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/EILoader.java:115: warning - @param argument "file" is not a parameter name.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/annotation/AsPercept.java:93: warning - Tag @link:illegal character: "64" in "@AsPercept"
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/annotation/AsPercept.java:93: warning - Tag @link: reference not found: @AsPercept
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/annotation/AsPercept.java:114: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/handlers/AbstractPerceptHandler.java:151: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/handlers/AbstractPerceptHandler.java:59: warning - @param argument "entity" is not a parameter name.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/handlers/DefaultPerceptHandler.java:94: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/translation/Parameter2Java.java:26: warning - @param argument "<T>" is not a type parameter name.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/util/AllPerceptsProvider.java:35: warning - Tag @link: missing '#': "AsPercept.event()"
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/util/AllPerceptsProvider.java:35: warning - Tag @link: can't find AsPercept.event() in eis.eis2java.util.AllPerceptsProvider
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/eis2java/util/EIS2JavaUtil.java:99: warning - @param argument "action" is not a parameter name.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/ActException.java:119: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/ActException.java:94: warning - @param argument "message" is not a parameter name.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/ActException.java:94: warning - @param argument "cause" is not a parameter name.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/AgentException.java:11: warning - @modified is an unknown tag.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/EntityException.java:11: warning - @modified is an unknown tag.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/NoEnvironmentException.java:12: warning - @modified is an unknown tag.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/QueryException.java:11: warning - @modified is an unknown tag.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/exceptions/RelationException.java:11: warning - @modified is an unknown tag.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/iilang/ParameterList.java:82: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/iilang/PrologVisitor.java:122: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/iilang/TruthValue.java:67: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/iilang/TruthValue.java:79: warning - @return tag has no arguments.
[WARNING] /Volumes/scratch/git/eis/eis/src/main/java/eis/iilang/XMLVisitor.java:120: warning - @return tag has no arguments.