logs-content: Added remove modal, fixed move up/down mutations

rpdata/api/Post.js

@@ -42,6 +42,24 @@ class PostAPI {
        return movePost
     })
   }
+
+  /**
+   * Call `removePost(input)` mutation, returns the id of the affected post.
+   * 
+   * @param {{id:string, toPosition: number}} input 
+   * @returns {Promise<{id:string}>}
+   */
+  remove(input) {
+    return query(`
+      mutation RemovePost($input: PostRemoveInput!) {
+        removePost(input: $input) {
+          id
+        }
+      }
+    `, {input}, {permissions: ["post.remove"]}).then(({removePost}) => {
+       return removePost
+    })
+  }
 }
 
 module.exports = {Post, postApi: new PostAPI}