switch to solr 4.0.0-BETA (see #124)
fix compile errors
fix test compile errors
change order of dependencies to have classpath ordered correctly

one test returned with error

  "fix your classpath to have tests-framework.jar before lucene-core.jar"

before.
move all velocity resources
maven: switch to solr 4.0.0 (see #124)
remove web.xml

does not contain custom changes any more
update solr/schema config for 4.0.0
register /select handler explicitly
update DIH classes from Solr 4.0.0
merge branch track-solr-upstream
adjust solr_home for solr4
move public resources to subdir
update README for solr4
make file 'last year' human readable
adjust .gitignore
Merge branch 'solr4'