Add EY logo and slight resize to sponsors

Author: andrewsosa

webapp/public/img/sponsors/ey/ey.svg

@@ -43,4 +43,4 @@ section.section.sponsors
             max-height: 125px
 
         &.tier-4 img
-            max-height: 100px
+            max-height: 75px

webapp/public/sass/index/sponsors.sass

@@ -17,9 +17,10 @@ block append content
         +sponsor(3, "/img/sponsors/scicomp/dsc.png")
         +sponsor(3, "/img/sponsors/coas/ArtsSciences.png")
       +row(3)
-        +sponsor(3, "/img/sponsors/statefarm/state_farm_logo.png")
-        +sponsor(3, "/img/sponsors/diversecomputing/DCI_Logo_RGB_Web_Large.png")
-        +sponsor(3, "/img/sponsors/jimmorgan/jms-stacked.png")
+        +sponsor(2, "/img/sponsors/statefarm/state_farm_logo.png")
+        +sponsor(2, "/img/sponsors/ey/ey.svg")
+        +sponsor(2, "/img/sponsors/diversecomputing/DCI_Logo_RGB_Web_Large.png")
+        +sponsor(2, "/img/sponsors/jimmorgan/jms-stacked.png")
       +row(4)
         +sponsor(2, "/img/sponsors/linode/Linode.png")
         +sponsor(2, "/img/sponsors/domistation/domiLogo.png")