Better symbolic icons

A lot of the old symbolic icons were not very geometric and off
the 16x16 grid. This brings them in line with the GNOME style for
symbolic icons and aligns them to the pixel grid where possible.

icons/mail-reply-sender-symbolic.svg

@@ -5,42 +5,42 @@
    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"
+   id="svg8"
    version="1.1"
-   id="Layer_1"
-   x="0px"
-   y="0px"
-   width="100px"
-   height="100px"
-   viewBox="0 0 100 100"
-   enable-background="new 0 0 100 100"
-   xml:space="preserve"
-   inkscape:version="0.48.4 r9939"
-   sodipodi:docname="back.svg"><metadata
-     id="metadata9"><rdf:RDF><cc:Work
-         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /></cc:Work></rdf:RDF></metadata><defs
-     id="defs7" /><sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="769"
-     inkscape:window-height="480"
-     id="namedview5"
-     showgrid="false"
-     inkscape:zoom="2.36"
-     inkscape:cx="50"
-     inkscape:cy="50"
-     inkscape:window-x="2943"
-     inkscape:window-y="352"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="Layer_1" /><path
-     d="M45.074,19.967c-1.919,0-3.812,0.131-5.664,0.379L37.546,2.5L12.857,33.585l30.538,24.884l-2.31-22.098  c0.421-0.014,0.839-0.041,1.264-0.041c19.789,0,35.834,16.043,35.834,35.832c0,9.896-4.009,18.854-10.493,25.338  c11.693-7.472,19.452-20.557,19.452-35.464C87.143,38.804,68.31,19.967,45.074,19.967z"
-     id="path3"
-     style="fill:#bebebe;fill-opacity:1" /></svg>
+   height="16"
+   width="16">
+  <metadata
+     id="metadata14">
+    <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="defs12" />
+  <g
+     id="g6"
+     fill="#2e3436"
+     font-weight="400">
+    <path
+       id="path2"
+       overflow="visible"
+       white-space="normal"
+       font-family="sans-serif"
+       color="#000"
+       style="line-height:normal;font-variant-ligatures:normal;font-variant-position:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-alternates:normal;font-feature-settings:normal;text-indent:0;text-align:start;text-decoration-line:none;text-decoration-style:solid;text-decoration-color:#000;text-transform:none;text-orientation:mixed;shape-padding:0;isolation:auto;mix-blend-mode:normal;marker:none;fill:#bebebe;fill-opacity:1"
+       d="M4 6v2h4.994s.791.014 1.553.395c.761.38 1.447.938 1.447 2.605v2h2v-2c0-2.333-1.314-3.775-2.553-4.395C10.203 5.986 8.994 6 8.994 6z" />
+    <path
+       id="path4"
+       overflow="visible"
+       font-family="Bitstream Vera Sans"
+       color="#bebebe"
+       style="line-height:normal;-inkscape-font-specification:'Bitstream Vera Sans';text-indent:0;text-align:start;text-decoration-line:none;text-transform:none;marker:none;fill:#bebebe;fill-opacity:1"
+       d="M7 3.022v1c0 .257-.13.529-.313.719l-2.28 2.281 2.28 2.281c.183.19.313.462.313.72v1H6c-.31 0-.552-.091-.75-.282L1.594 7.022 5.25 3.303c.198-.19.44-.28.75-.28z" />
+  </g>
+</svg>