update copyright to 2014
remove useless class TemplateEngineCoverageBaseTest
remove useless TemplateEngineTestBase::testDisablePHPUnitWarning
throw a TEPluginRegexInvalidException if testing the plugin regex fails in registerPlugin
removed some conditionals where they were not needed; other small improvements
new events: static_init and init can be used in place of the global functions

this also makes the TE_setup2.php file and the two global functions TE_static_setup and TE_setup optional
small coverage improvement; don't disable gzip if incompatibe features are set to be disabled explicitly
add getPluginStatistics to read out the recorded plugin statistics