Incorrect UI labels and empty pages

[kullackov]

1. It is possible to stake 1000 SQT, but the label says that "Staking token should be large than 1000 SQT"
   

2. All rewards were claimed, but label says "You have an unclaimed reward"
   

3. There were 10 pages at frontier.subquery.network/staking/ndexing and the last of them were empty.
   

[mzxyz]

Thanks for reporting this issue, we will fix these bugs @HZHAIX @lilian79511 @caiyiliang