upgrade Selenium to 2.41.0
update to latest Closure Compiler
TAP5-2246: Use CofeeScript list comprehension to log init arguments, fixes JavaScript error in IE8
TAP5-2317: fix a StackOverflowError when counting a large flow
TAP5-2289: Update Bootstrap to 3.1.1, update Less4j to 1.5.3
TAP5-2315: remove obsolete upload.js asset and import
re-enable the integration tests in tapestry-upload