Allowed URL Prefixes → Extra Start URLs

Changes name, hopefully people have an easier time understanding this now!

Will close #476

frontend/src/components/config-details.ts

@@ -196,7 +196,7 @@ export class ConfigDetails extends LiteElement {
         this.scopeTypeLabels[crawlConfig?.config.scopeType]
       )}
       ${this.renderSetting(
-        msg("Allowed URL Prefixes"),
+        msg("Extra Start URLs"),
         crawlConfig?.config.include?.length
           ? html`
               <ul>

frontend/src/pages/archive/crawl-config-editor.ts

@@ -898,7 +898,7 @@ https://example.com/path`}
       ${this.renderFormCol(html`
         <sl-textarea
           name="allowedExternalUrlList"
-          label=${msg("Allowed URL Prefixes")}
+          label=${msg("Extra Start URLs")}
           rows="3"
           autocomplete="off"
           value=${this.formState.allowedExternalUrlList}