remove postCSS functions, unknown start/end date is 'unsoecified' now, show correct start/end dates

rollup.config.js

@@ -74,15 +74,7 @@ export default {
 		commonjs(),
     postcss({
       extract: true,
-      minimize: true,
-      use: [
-        ['sass', {
-          includePaths: [
-            './src/theme',
-            './node_modules'
-          ]
-        }]
-      ]
+      minimize: true
     }),
 
 		// In dev mode, call `npm run start` once

src/components/EventTooltip.svelte

@@ -137,7 +137,7 @@
                   {activityTf($tooltip.tp.startDate)} to {activityTf($tooltip.tp.endDate)}
                 {/if}
               {:else}
-                unknown
+                unspecified
               {/if}
             </p>
           </div>

src/components/Table.svelte

@@ -95,7 +95,7 @@
               class:selected={$selected.map((d) => d.id).includes(row.id)}>
             {#each columns as column (column.property)}
               <td class={column.classes} style={column.minWidth ? `min-width: ${column.minWidth};`: ''}>
-                {#if (row[column.property] === undefined)}
+                {#if (row[column.property] === undefined || row[column.property] === null)}
                   {''}
                 {:else if (column.format)}
                   {column.format(row[column.property])}