fix numix svgs with undetectable mime type

Signed-off-by: binsky <timo@binsky.org>

img/icons/Numix/apps/goa-account-google.svg

@@ -1,4 +1,3 @@
-<!-- Generator: Adobe Illustrator 18.1.1, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" style="enable-background:new 0 0 400 400">
  <g transform="matrix(1.3333333,0,0,1.3333333,7.8950526e-7,-21.333332)">
   <path d="m 10.375 28.27 c -1.725 1.99 -3.053 4.372 -3.777 7.08 -0.378 1.412 -0.566 2.83 -0.592 4.23 -0.008 0.275 -0.007 0.55 -0.002 0.826 0.024 1.41 0.213 2.838 0.594 4.26 0.725 2.704 2.051 5.087 3.775 7.08 l 3.699 -4.975 c -0.737 -1.087 -1.319 -2.308 -1.68 -3.654 -0.231 -0.86 -0.348 -1.721 -0.385 -2.572 -0.008 -0.187 -0.018 -0.373 -0.018 -0.561 0 -0.111 0.008 -0.22 0.012 -0.33 0.026 -0.909 0.146 -1.828 0.393 -2.748 0.361 -1.346 0.941 -2.567 1.678 -3.654 l -3.697 -4.975 z" mix-blend-mode="normal" isolation="auto" white-space="normal" solid-opacity="1" solid-color="#000000" style="visibility:visible;shape-rendering:auto;color-interpolation-filters:linearRGB;fill:#fbbc05;opacity:1;image-rendering:auto;fill-opacity:1;stroke:none;display:inline;color:#000;fill-rule:nonzero;color-rendering:auto;color-interpolation:sRGB"/>

img/icons/Numix/categories/preferences-desktop-display.svg

@@ -1,4 +1,3 @@
-<!-- color: #71e9d2 -->
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
  <g transform="matrix(1.3333148,0,0,1.3333148,1.114713e-4,2.000417)" style="fill:#c088c3;fill-opacity:1">
   <path d="m 8 6 c -1 0 -2 1 -2 2 l 0 23.5 15 0 c 0 0 0 4.5 -3 6 l -3 0 0 1.5 18 0 0 -1.5 -3 0 c -3 -1.5 -3 -6 -3 -6 l 15 0 l 0 -23.5 c 0 -1 -1 -2 -2 -2 z m 1 3 30 0 0 18 -30 0 z m 12 19.5 l 6 0 0 1.5 -6 0 z" style="stroke:none;fill-rule:nonzero"/>

img/icons/Numix/categories/preferences-system-power.svg

@@ -1,4 +1,3 @@
-<!-- color: #46baa7 -->
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
  <path d="M 26.5,7 C 25.6735,7 25,7.6735 25,8.5 24.999269,9.4728445 25,12 25,12 l -3.7805,0 C 18.875,12 17,13.974 17,16.3125 l 0,36.375 C 17,55.026 18.881,57 21.2195,57 L 42.782,57 C 45.1205,57 47,55.026 47,52.6875 l 0,-36.375 C 47,13.974 45.1265,12 42.782,12 L 39,12 39,8.5 C 39,7.6735 38.3265,7 37.5,7 Z m 16.282,8 C 43.427,15 44,15.522 44,16.3125 l 0,36.375 C 44,53.478 43.433,54 42.782,54 L 21.2195,54 C 20.5685,54 20,53.478 20,52.6875 l 0,-36.375 C 20,15.522 20.5745,15 21.2195,15 Z M 42,27 22,42 l 0,10 20,0 z" style="fill:#ecb040;fill-opacity:1;stroke:none;fill-rule:nonzero"/>
 </svg>

img/icons/Numix/categories/preferences-system-privacy.svg

@@ -1,4 +1,3 @@
-<!-- color: #8d65ba -->
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
  <path d="m 32 14 c -11.214 0.007 -20.22 7.745 -25.466 13.792 -0.652 0.752 -1.352 1.638 -1.936 2.458 -0.398 0.547 -0.596 1.148 -0.596 1.75 c 0 0.602 0.197 1.203 0.596 1.75 0.584 0.82 1.284 1.707 1.936 2.458 c 5.25 6.05 14.26 13.786 25.466 13.792 11.214 -0.006 20.22 -7.745 25.466 -13.792 c 0.652 -0.752 1.352 -1.638 1.936 -2.458 0.398 -0.547 0.596 -1.148 0.596 -1.75 0 -0.602 -0.197 -1.203 -0.596 -1.75 c -0.584 -0.82 -1.284 -1.707 -1.936 -2.458 -5.25 -6.05 -14.26 -13.786 -25.466 -13.792 m 0 4 c 2.985 0.005 5.89 0.964 8.291 2.737 l -5.058 5.058 c -0.998 -0.521 -2.107 -0.794 -3.233 -0.795 c -3.866 0 -7 3.134 -7 7 0.001 1.126 0.274 2.235 0.795 3.233 l -5.058 5.058 c -1.773 -2.401 -2.732 -5.306 -2.737 -8.291 0 -7.732 6.268 -14 14 -14 m 11.256 5.709 c 1.773 2.401 2.732 5.306 2.737 8.291 0 7.732 -6.268 14 -14 14 -2.985 -0.005 -5.89 -0.964 -8.291 -2.737 l 5.058 -5.058 c 0.998 0.521 2.107 0.794 3.233 0.795 3.866 0 7 -3.134 7 -7 -0.001 -1.126 -0.274 -2.235 -0.795 -3.233 z m -9.163 2.691 c 0.164 0.001 0.328 0.014 0.49 0.038 l -3.951 3.951 c -0.024 -0.162 -0.037 -0.326 -0.038 -0.49 0 -1.933 1.567 -3.5 3.5 -3.5 m 3.462 3.01 c 0.024 0.162 0.037 0.326 0.038 0.49 0 1.933 -1.567 3.5 -3.5 3.5 -0.164 -0.001 -0.328 -0.014 -0.49 -0.038 l 3.951 -3.951" style="fill:#eb93b5;fill-opacity:1;stroke:none;fill-rule:nonzero"/>
 </svg>