Prevent screen updates when running under HTMLUnit

This fixes the severe performance issues with big test suites due to unecessary screen updates and how Rhino handles asynchronous things.
Merge pull request #128 from dtabuenc/master

Fixed issue #127 very slow running times with HTMLUnit
Fix of ProjectDirScripResolverIntegrationTest because of a java 1.6 compiler bug

Test code changes because of java 1.6 compiler

see bug http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7034548
Merge pull request #141 from kreyssel/topic/compilebug

Fix of ProjectDirScripResolverIntegrationTest because of a java 1.6 compiler bug
jasmine:test goal now starts up jetty the same as jasmine:bdd (jasmine:test uses a random available port instead of 8234)
no longer need to copy sources and specs into the target directory
no longer need jasmine-lifecycle and <extensions>true</extensions> is no longer needed in configuration
Merge branch 'topic/issue142' of https://github.com/klieber/jasmine-maven-plugin into topic/issue142