Filter-Menu icon in mobile-mode not intuitive

[josefkreitmayer]

In Mobile-mode, the funnel-like icon that must be clicked to show the menu is not very intuitive. So users might not find the menu:

That was reported by @lottallegra and also from several other sides.

[josefkreitmayer]

Interesting, found that article, where they did user testing, and "filter" as word was much more intuitive than the symbol: https://www.quora.com/What-icons-best-represent-filter-refine-in-an-iPhone-app

Here the symbol is mentioned as a bad example: "martini-glass" in icon design mistake no 7: http://turbomilk.com/blog/cookbook/icon_design/10_mistakes_in_icon_design/

[josefkreitmayer]

maybe that can be combined with susy-partners#18 once that is in focus.