URL-encoded URLs in FlatPage.get_absolute_url.
Fixed #18862 -- Honored script prefix in FlatPage.get_absolute_url.
Fix #20022: Correctly handle prefixes with url-unsafe characters in reverse().
Fixed #13260 -- Quoted arguments interpolated in URLs in reverse.

Conflicts:
	docs/releases/1.6.txt
	tests/regressiontests/templates/tests.py
The commit was only partially applied.