LT-281: Replacing variables for theme calls

Packages/lesiontracker/client/components/caseProgress/caseProgress.styl

@@ -13,15 +13,15 @@
     margin-left: 22px
 
     h5
-      color: $textPrimaryColor
+      theme('color', '$textPrimaryColor')
       line-height: 46px
       margin: 0
       font-size: 15px
       font-weight: bold
 
     button.btn
-      background-color: $activeColor
-      border: 1px solid $uiBorderColorActive
+      theme('background-color', '$activeColor')
+      theme('border', '1px solid $uiBorderColorActive')
       color: #000
       cursor: pointer
       font-size: 15px