Duplicated keywords in search engine keywords report

[matt]

For example on piwik.org/demo for 1st of March, the keyword "piwik" appears twice in the report.

This is not due to trailing spaces as the keywords are trimmed (see core/Tracker/Visit.php line 710).

This could be due to encoding issue or other special characters.

[matt]

may be fixed whe n #589 is fixed

[matt]

(In [1014]) - cleaning up the search engine parsing code, adding tests, recording UTF8 keywords in the DB rather than encoded (as tables are now utf8, refs #310) - adding tests in url.test.php and fixed double encoding in some edge cases - fixed #589 Piwik fails to properly decode and store some chinese keywords (eg. from baidu.com) - fixed #435 Exotic encoded keywords should be stored as utf-8 in the DB - refs #575 hopefully fixed, will give it a few days of tests on piwik.org

[matt]

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