doCheckTagsFilter did not make any sense.
Unless you actually use the field attribute exclusively for databinding, doCheck* methods do not work.
doCheckDefaultValue was checking a repository URL, which made no sense.
Merge branch 'master' into ListSubversionTagsParameterDefinition-doCheckTagsFilter

Conflicts:
	src/main/java/hudson/scm/listtagsparameter/ListSubversionTagsParameterDefinition.java
	src/main/resources/hudson/scm/listtagsparameter/ListSubversionTagsParameterDefinition/config.jelly
Merge pull request #66 from jglick/ListSubversionTagsParameterDefinition-doCheckTagsFilter

ListSubversionTagsParameterDefinition form validation broken