style: set IconButton stroke colors to comet

fix: replaced edit buttons of the BooleanPropertiesTable component and
Contact Info and Terms & Conditions pages

new-lamassu-admin/src/components/buttons/IconButton.js

@@ -1,6 +1,8 @@
 import { makeStyles, IconButton as IconB } from '@material-ui/core'
 import React from 'react'
 
+import { comet } from 'src/styling/variables'
+
 const styles = {
   label: ({ size }) => ({
     width: size,
@@ -12,6 +14,15 @@ const styles = {
     },
     '&:hover': {
       backgroundColor: 'inherit'
+    },
+    '&:hover rect': {
+      stroke: comet
+    },
+    '&:hover polygon': {
+      stroke: comet
+    },
+    '&:hover path': {
+      stroke: comet
     }
   }
 }