Show skeleton on Spacewalk transactions page

[ebma]

Shows a skeleton for the Spacewalk transactions table when the data is still loading.
While the issue ticket asks for a spinner, I think the skeleton is prettier.

Note: There is a little bug that the skeleton does not immediately show when you refresh the page on the Spacewalk transactions view. I'm not sure why exactly and I tried some things to prevent this but it's just a minor issue and unlikely that users will notice as this only pops up when you manually refresh the page on that view.

Closes #513.

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[Sharqiewicz]

@ebma Great changes! 🚀 I noticed one small thing: when I start localhost and am not logged in, the table loads endlessly

[ebma]

@pendulum-chain/product can someone please have a look at the deploy preview and let me know if it's okay the way it works now? Since technically, the transactions need to take the activeBlockNumber into account, the table will now show the skeleton each time a new block is coming in. Because for each new block, the table is populated anew. In almost all cases the table will not change though. Please let me know if you think the repeated loading indication is too much and I can change it to only show at the beginning.

[annatekl]

While the issue ticket asks for a spinner, I think the skeleton is prettier.

The table loading time is still quite long

[ebma]

Only if you refresh the page on the transactions page or what exactly do you think is long? The time until the skeleton shows or the duration of how long the skeleton stays?

[annatekl]

Only if you refresh the page on the transactions page or what exactly do you think is long? The time until the skeleton shows or the duration of how long the skeleton stays?

the duration the skeleton stays

[ebma]

That's not what the related issue #513 was about though, was it? 😅 It's about showing a loading indicator and not reducing the loading time.

[annatekl]

That's not what the related issue #513 was about though, was it? 😅 It's about showing a loading indicator and not reducing the loading time.

true, lets do it this way