add zoom-in icon

static/font/font/fontello.svg

@@ -62,6 +62,8 @@
 
 <glyph glyph-name="chart-bar" unicode="&#xe81b;" d="M357 357v-286h-143v286h143z m214 286v-572h-142v572h142z m572-643v-72h-1143v858h71v-786h1072z m-357 500v-429h-143v429h143z m214 214v-643h-143v643h143z" horiz-adv-x="1142.9" />
 
+<glyph glyph-name="zoom-in" unicode="&#xe81c;" d="M571 411v-36q0-7-5-13t-12-5h-125v-125q0-7-6-13t-12-5h-36q-7 0-13 5t-5 13v125h-125q-7 0-12 5t-6 13v36q0 7 6 12t12 5h125v125q0 8 5 13t13 5h36q7 0 12-5t6-13v-125h125q7 0 12-5t5-12z m72-18q0 103-73 176t-177 74-177-74-73-176 73-177 177-73 177 73 73 177z m286-465q0-29-21-50t-51-21q-30 0-50 21l-191 191q-100-69-223-69-80 0-153 31t-125 84-84 125-31 153 31 152 84 126 125 84 153 31 153-31 125-84 84-126 31-152q0-123-69-223l191-191q21-21 21-51z" horiz-adv-x="928.6" />
+
 <glyph glyph-name="spin3" unicode="&#xe832;" d="M494 857c-266 0-483-210-494-472-1-19 13-20 13-20l84 0c16 0 19 10 19 18 10 199 176 358 378 358 107 0 205-45 273-118l-58-57c-11-12-11-27 5-31l247-50c21-5 46 11 37 44l-58 227c-2 9-16 22-29 13l-65-60c-89 91-214 148-352 148z m409-508c-16 0-19-10-19-18-10-199-176-358-377-358-108 0-205 45-274 118l59 57c10 12 10 27-5 31l-248 50c-21 5-46-11-37-44l58-227c2-9 16-22 30-13l64 60c89-91 214-148 353-148 265 0 482 210 493 473 1 18-13 19-13 19l-84 0z" horiz-adv-x="1000" />
 
 <glyph glyph-name="spin4" unicode="&#xe834;" d="M498 857c-114 0-228-39-320-116l0 0c173 140 428 130 588-31 134-134 164-332 89-495-10-29-5-50 12-68 21-20 61-23 84 0 3 3 12 15 15 24 71 180 33 393-112 539-99 98-228 147-356 147z m-409-274c-14 0-29-5-39-16-3-3-13-15-15-24-71-180-34-393 112-539 185-185 479-195 676-31l0 0c-173-140-428-130-589 31-134 134-163 333-89 495 11 29 6 50-12 68-11 11-27 17-44 16z" horiz-adv-x="1001" />