Improve nav drawer drawable

Graphics/drawables/drawer_header.svg

@@ -232,7 +232,7 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="2.8"
-     inkscape:cx="364.39578"
+     inkscape:cx="300.46721"
      inkscape:cy="36.557158"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
@@ -674,7 +674,7 @@
        id="rect15458"
        style="color:#000000;fill:#e2cf96;fill-opacity:1;fill-rule:nonzero;stroke:#213149;stroke-width:2.03783631;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate" />
     <rect
-       style="opacity:0.83950614;fill:#ececec;fill-opacity:1;stroke:none"
+       style="opacity:1;fill:#ececec;fill-opacity:1;stroke:none"
        id="rect3887"
        width="199.00003"
        height="29.799492"