add gauge icon

static/font/font/fontello.svg

@@ -76,6 +76,8 @@
 
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+<glyph glyph-name="gauge" unicode="&#xf0e4;" d="M214 214q0 30-21 51t-50 21-51-21-21-51 21-50 51-21 50 21 21 50z m107 250q0 30-20 51t-51 21-50-21-21-51 21-50 50-21 51 21 20 50z m239-268l57 213q3 14-5 27t-21 16-27-3-17-22l-56-213q-33-3-60-25t-35-55q-11-43 11-81t66-50 81 11 50 66q9 33-4 65t-40 51z m369 18q0 30-21 51t-51 21-50-21-21-51 21-50 50-21 51 21 21 50z m-358 357q0 30-20 51t-51 21-50-21-21-51 21-50 50-21 51 21 20 50z m250-107q0 30-20 51t-51 21-50-21-21-51 21-50 50-21 51 21 20 50z m179-250q0-145-79-269-10-17-30-17h-782q-20 0-30 17-79 123-79 269 0 102 40 194t106 160 160 107 194 39 194-39 160-107 106-160 40-194z" horiz-adv-x="1000" />
+
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