Shorten to_native
Fixed bug in assert_strict_equal
to_unicode now accepts non-strings (integers etc)
get_current_url: Return iri
dump_cookie: Cookie key and values are unicode
Finally fix the bug in assert_strict_equal
Revert "dump_cookie: Cookie key and values are unicode"

This reverts commit 8239a01d3f595a34da9e05bae21af417f10b6af0.
Finally fix the bug with cookie values
And also make the rv of dump_cookie unicode
Fix some literals
Move import into func
Merge pull request #356 from untitaker/sprint-branch

Cookies and so on