Piwik detects Midori 0.5 as Chrome 18

[rluik]

Here's the UA-String under Fedora 20:

Mozilla/5.0 (X11; Linux) AppleWebKit/538.1 (KHTML, like Gecko) Chrome/18.0.1025.133 Safari/538.1 Midori/0.5

[sgiehl]

In 26734da1bf19f7a163387ccf28018f3dd9e1908e: fixes #4557 - moved midori in detection list, so it isn't detected as chrome anymore

[sgiehl]

In 5e7edb19729aaceb1f9f3140f912bada9c0ef7a5: refs #4557 - improved linux detection

[sgiehl]

In 8d514d89e50dea49582c1be22636a99214818098: refs #4557 - added test for midori

[rluik]

Would you also take a look at #3964?