travis: Blacklist topic/rewrite_phantomjs
Move phantomjs into driver package.
Move phantomjs concerns from processor.web to coprocessor.phantomjs
stream: Keep data and close connnection on content overrun.
Merge commit '712265f831cc' into develop

Conflicts:
	wpull/builder.py
	wpull/driver/phantomjs_test.py
	wpull/processor/web.py
coprocessor.phantomjs: Fix up merge.