Fix UI inconsistencies between room list & communities

fixes #204
fixes #255

resources/icons/ui/world.svg

@@ -1,98 +1 @@
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-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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-     inkscape:guide-bbox="true"
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-        <dc:type
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-        <dc:title></dc:title>
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