Fixed issue with timeline, accounts being fetched with undefined/null id

• Fixed:
- issue with timeline, accounts being fetched with undefined/null id

app/javascript/gabsocial/actions/accounts.js

@@ -97,6 +97,7 @@ function getFromDB(dispatch, getState, index, id) {
  */
 export const fetchAccount = (id) => (dispatch, getState) => {
   if (id === -1 || getState().getIn(['accounts', id], null) !== null) return
+  if (!id) return
 
   dispatch(fetchRelationships([id]))
   dispatch(fetchAccountRequest(id))

app/javascript/gabsocial/actions/timelines.js

@@ -260,6 +260,8 @@ export const expandCommunityTimeline = ({ maxId, onlyMedia } = {}, done = noop)
  * 
  */
 export const expandAccountTimeline = (accountId, { maxId, withReplies, commentsOnly } = {}) => {
+  if (!accountId) return
+  
   let key = `account:${accountId}${withReplies ? ':with_replies' : ''}${commentsOnly ? ':comments_only' : ''}`
   return expandTimeline(key, `/api/v1/accounts/${accountId}/statuses`, {
     only_comments: commentsOnly,