Add Skeleton to Fetching queries

[yangwao]

Buefy has new Skeleton component

• [ ] Send PR against develop branch, beware, it breaks often, you might keep it up to date, till we merge it
• [ ] Use skeleton on all fetching queries
• [ ] Find a smart way how to use it easy everywhere where it waits for network
• [ ] Explorer
• • [ ] Chain - Chain name, Best Block, Finalized, Total Issuance, Validators, Epoch, Era, Recent finalized blocks
• • [ ] Block details - leverage buefy skeleton card component here
• [ ] Accounts
• • [ ] Accounts
• • [ ] Contacts
• [ ] Democracy - info board

For example in shared/Keypair.vue, while fetching transactions count and available balance, you could use skeleton effect

[iamonuwa]

Do I do fix this for all query pages or just this?

[yangwao]

@iamonuwa yes that would be perfect!