Feature/admin login 1

[DinMon]

Add the layout for admin to enter a password.

[VitalyKrenel]

Right now this branch is pointing to master, but it is based on the coins feature branch. Right now, when reviewing the code, I can see the things already reviewed in the feature branch.

In such cases, I suggest creating a PR pointing to the feature branch and after this feature branch gets merged, change the current PR back to master

[VitalyKrenel]

Right now these imports give you paths to the image, not components, so I would recommend using the lower case (otherwise it's a little bit confusing).

Alternatively, you can use SVGO's feature, supported by the CRA, to import SVGs as real react components:

import { ReactComponent as Logo } from './logo.svg';

function App() {
  return (
    <div>
      {/* Logo is an actual React component */}
      <Logo />
    </div>
  );
}

[VitalyKrenel]

JFYI: when you have quite a few props (or just attributes) on the component, you could split it into multiple lines to improve readability (especially for PR's viewers, but also for developers in the code):

 <input 
  className='textbox password-textbox' 
  type={(showPassword) ? 'password' : 'text'} 
  name='password' 
  onChange={onPasswordChange} 
  required
/>

[VitalyKrenel]

Btw, when you use default exports, do you get auto completes in your VSCode?

[VitalyKrenel]

I would suggest using signUserIn as a name, instead of logUser.

Log by itself is the same log as in console.log - on the first view of the PR I didn't spot this and thought it some debug thing.