Replace stick figure with smiley

docs/source/development/figs/notebook_components.svg

@@ -7,6 +7,7 b''
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@@ -188,6 +189,94 b''
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@@ -197,8 +286,8 b''
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@@ -220,7 +309,7 b''
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
+        <dc:title />
       </cc:Work>
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@@ -230,42 +319,6 b''
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@@ -382,16 +435,15 b''
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-       y="41.691643"
+       style="font-size:28px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Droid Sans;-inkscape-font-specification:Droid Sans"
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+       y="193.37286"
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+       sodipodi:linespacing="125%"><tspan
          sodipodi:role="line"
          id="tspan5581"
-         x="-178.41751"
-         y="41.691643">User</tspan></text>
+         x="20.674601"
+         y="193.37286">User</tspan></text>
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@@ -470,5 +522,75 b''
            x="-209.10046"
            sodipodi:role="line">Websockets</tspan></text>
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