#3012 prediction market facilitate loading assets and load whitelist issuers on chain

[Metizik]

General

Closes #177

Implemented lazy fetching of markets, using HOC PMAssetsContainer.

General

Please make sure the following is done:

• Pull request is onto develop
• If you haven't already, have a look at
  • https://github.com/bitshares/bitshares-ui/blob/develop/CODE_OF_CONDUCT.md
  • https://github.com/bitshares/bitshares-ui/blob/develop/CONTRIBUTING.md

Code Preparation

Please review all your changes one last time before committing

• [ ] Check for unused code
• [ ] No unrelated changes are included
• [ ] None of the changed files are reformatting only
• [ ] Code is self explanatory or documented
• [ ] All written text is properly translated (english language)

Testing

The branch has been tested on the following browsers (desktop and mobile view)

• [ ] Chrome
• [ ] Opera
• [ ] Firefox
• [ ] Safari

User interface changes

Delete this section if there weren't any UI changes. Please make sure you tested your changes in all themes

• [ ] Dark
• [ ] Light
• [ ] Midnight

Please provide screenshots/licecap of your changes below

[sschiessl-bcp]

@Metizik please check my last commits, you had spelling mistakes in variable names. I don't know how that still worked locally for you when testing.

Either way, I am refactoring it a bit now

[sschiessl-bcp]

Accepted