ui: add missing discord and twitter icons

passbook/static/static/passbook/sources/discord.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 245 240"><path d="M104.4 103.9c-5.7 0-10.2 5-10.2 11.1s4.6 11.1 10.2 11.1c5.7 0 10.2-5 10.2-11.1.1-6.1-4.5-11.1-10.2-11.1zM140.9 103.9c-5.7 0-10.2 5-10.2 11.1s4.6 11.1 10.2 11.1c5.7 0 10.2-5 10.2-11.1s-4.5-11.1-10.2-11.1z"/><path d="M189.5 20h-134C44.2 20 35 29.2 35 40.6v135.2c0 11.4 9.2 20.6 20.5 20.6h113.4l-5.3-18.5 12.8 11.9 12.1 11.2 21.5 19V40.6c0-11.4-9.2-20.6-20.5-20.6zm-38.6 130.6s-3.6-4.3-6.6-8.1c13.1-3.7 18.1-11.9 18.1-11.9-4.1 2.7-8 4.6-11.5 5.9-5 2.1-9.8 3.5-14.5 4.3-9.6 1.8-18.4 1.3-25.9-.1-5.7-1.1-10.6-2.7-14.7-4.3-2.3-.9-4.8-2-7.3-3.4-.3-.2-.6-.3-.9-.5-.2-.1-.3-.2-.4-.3-1.8-1-2.8-1.7-2.8-1.7s4.8 8 17.5 11.8c-3 3.8-6.7 8.3-6.7 8.3-22.1-.7-30.5-15.2-30.5-15.2 0-32.2 14.4-58.3 14.4-58.3 14.4-10.8 28.1-10.5 28.1-10.5l1 1.2c-18 5.2-26.3 13.1-26.3 13.1s2.2-1.2 5.9-2.9c10.7-4.7 19.2-6 22.7-6.3.6-.1 1.1-.2 1.7-.2 6.1-.8 13-1 20.2-.2 9.5 1.1 19.7 3.9 30.1 9.6 0 0-7.9-7.5-24.9-12.7l1.4-1.6s13.7-.3 28.1 10.5c0 0 14.4 26.1 14.4 58.3 0 0-8.5 14.5-30.6 15.2z"/></svg>

passbook/static/static/passbook/sources/twitter.svg

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 20.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 400 400" style="enable-background:new 0 0 400 400;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#1DA1F2;}
+	.st1{fill:#FFFFFF;}
+</style>
+<g id="Dark_Blue">
+	<rect class="st0" width="400" height="400"/>
+</g>
+<g id="Logo__x2014__FIXED">
+	<path class="st1" d="M153.6,301.6c94.3,0,145.9-78.2,145.9-145.9c0-2.2,0-4.4-0.1-6.6c10-7.2,18.7-16.3,25.6-26.6
+		c-9.2,4.1-19.1,6.8-29.5,8.1c10.6-6.3,18.7-16.4,22.6-28.4c-9.9,5.9-20.9,10.1-32.6,12.4c-9.4-10-22.7-16.2-37.4-16.2
+		c-28.3,0-51.3,23-51.3,51.3c0,4,0.5,7.9,1.3,11.7c-42.6-2.1-80.4-22.6-105.7-53.6c-4.4,7.6-6.9,16.4-6.9,25.8
+		c0,17.8,9.1,33.5,22.8,42.7c-8.4-0.3-16.3-2.6-23.2-6.4c0,0.2,0,0.4,0,0.7c0,24.8,17.7,45.6,41.1,50.3c-4.3,1.2-8.8,1.8-13.5,1.8
+		c-3.3,0-6.5-0.3-9.6-0.9c6.5,20.4,25.5,35.2,47.9,35.6c-17.6,13.8-39.7,22-63.7,22c-4.1,0-8.2-0.2-12.2-0.7
+		C97.7,293.1,124.7,301.6,153.6,301.6"/>
+</g>
+<g id="Annotations">
+</g>
+</svg>