Move many widget options to a context menu

Part of https://github.com/vector-im/riot-web/issues/11262

res/img/feather-customised/widget/bin.svg

@@ -1,65 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   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"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="11.014242"
-   height="12"
-   viewBox="0 0 11.014242 12"
-   version="1.1"
-   id="svg6"
-   sodipodi:docname="bin.svg"
-   inkscape:version="0.92.3 (2405546, 2018-03-11)">
-  <metadata
-     id="metadata12">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <defs
-     id="defs10" />
-  <sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="750"
-     inkscape:window-height="480"
-     id="namedview8"
-     showgrid="false"
-     fit-margin-top="0.5"
-     fit-margin-left="0.5"
-     fit-margin-bottom="0.5"
-     fit-margin-right="0.5"
-     inkscape:zoom="19.666667"
-     inkscape:cx="5.5071212"
-     inkscape:cy="6"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg6" />
-  <g
-     id="g4"
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-linecap:round;stroke-linejoin:round;stroke-opacity:1"
-     transform="translate(1.0071212)">
-    <path
-       d="M 0,3 H 9 M 8,3 v 7 A 1,1 0 0 1 7,11 H 2 A 1,1 0 0 1 1,10 V 3 M 2.5,3 V 2 a 1,1 0 0 1 1,-1 h 2 a 1,1 0 0 1 1,1 v 1 m -3,2.5 v 3 m 2,-3 v 3"
-       id="path2"
-       style="stroke:#000000;stroke-opacity:1"
-       inkscape:connector-curvature="0" />
-  </g>
-</svg>

res/img/feather-customised/widget/camera.svg

@@ -1,6 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="13" height="11" viewBox="0 0 13 11">
-    <g fill="none" fill-rule="evenodd" stroke="#212121" stroke-linecap="round" stroke-linejoin="round" transform="translate(1 1)">
-        <path d="M11 8a1 1 0 0 1-1 1H1a1 1 0 0 1-1-1V2.5a1 1 0 0 1 1-1h2L4 0h3l1 1.5h2a1 1 0 0 1 1 1V8z"/>
-        <circle cx="5.5" cy="5" r="2"/>
-    </g>
-</svg>

res/img/feather-customised/widget/edit.svg

@@ -1,6 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="12" height="11" viewBox="0 0 12 11">
-    <g fill="none" fill-rule="evenodd" stroke="#212121" stroke-linecap="round" stroke-linejoin="round">
-        <path d="M10 6.33V9a1 1 0 0 1-1 1H2a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1h2.67"/>
-        <path d="M9 0l2 2-5 5H4V5z"/>
-    </g>
-</svg>

res/img/feather-customised/widget/refresh.svg

@@ -1,6 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="13" height="11" viewBox="0 0 13 11">
-    <g fill="none" fill-rule="evenodd" stroke="#212121" stroke-linecap="round" stroke-linejoin="round">
-        <path d="M12 1.5v3H9M1 9.5v-3h3"/>
-        <path d="M2.255 4A4.5 4.5 0 0 1 9.68 2.32L12 4.5m-11 2l2.32 2.18A4.5 4.5 0 0 0 10.745 7"/>
-    </g>
-</svg>

res/img/feather-customised/widget/x-circle.svg

@@ -1,6 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12">
-    <g fill="none" fill-rule="evenodd" stroke="#212121" stroke-linecap="round" stroke-linejoin="round" transform="translate(1 1)">
-        <circle cx="5" cy="5" r="5"/>
-        <path d="M6.5 3.5l-3 3M3.5 3.5l3 3"/>
-    </g>
-</svg>