[TASK] Demo purpose

Will not be pushed on master

src/main/resources/config.properties

 #PlantUML configuration file
 #
-#USE_GOOGLE_TRACKER=on
+USE_GOOGLE_TRACKER=on
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+SHOW_SOCIAL_BUTTONS=on

src/main/webapp/resource/socialbuttons1.html

+SOCIAL BUTTONS are ON
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src/main/webapp/resource/socialbuttons2.jspf

+<p style="text-align:center"><a href="//www.pinterest.com/pin/create/button/?url=http%3A%2F%2Fwww.plantuml.com%2Fplantuml%2Fform%3Furl%3D${encoded}&media=http%3A%2F%2Fwww.plantuml.com%2Fplantuml%2Fpng%2F${encoded}&description=My%20awesome%20diagram" data-pin-do="buttonPin" data-pin-config="none" data-pin-color="white"><img src="//assets.pinterest.com/images/pidgets/pinit_fg_en_rect_white_20.png" /></a>
+<script type="text/javascript" async src="//assets.pinterest.com/js/pinit.js"></script>
+</p>
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