AppData: Show more/less button triggers data search that runs in BE even when switch to another tab

[elena-zh]

Related to #189 and #168

1. Generate app data hash on the Encode tab and do not upload it to IPFS
2. Copy the hash and open Decode tab
3. Past the hash and press on Decode button
4. Wait till you get an error
5. Press on Show less/more several times

AR: request to BE is sent to every press on the link.
It runs in the BE and returns a lot of errors even if I navigate to another tab

See the video (it is too long): https://watch.screencastify.com/v/4q293EuFCvf3vB1nuPt8
ER: do not trigger request on show more/less button press (like we do on User details page)

[elena-zh]

Also, I have noticed that when Decode a not uploaded appdatahash, link is auto-generated on the button press. The link navigates to 504 page

I think, it would be great not to show the hash as a link until we receive a successful response with the appdata from BE. WDYT?