Fix for issue #82
less indirection: use self.web_page instead of self.web_view
TST randomize all mockserver ports when running tests. Fix GH-30.
Remove SplashRequest class
Add tests to check that headers are not passed to the targe site in non-proxy requests
Replace hasattr with getattr
Check that content-type header is not sent to target site
Small change
Merge pull request #86 from andresp99999/fix-gh-82

Fix for issue #82
simplify code to make it easier to merge GH-75
Merge branch 'master' into request-filters-and-logging

Conflicts:
	splash/qtrender.py
	splash/tests/utils.py