Search Form bugs and improvements

[Dorin-David]

The main form search has several issues:

1. It is not possibile to trigger a user search by pressing the Enter button
2. When clicking on the text input, the placeholder message does not dissapear
3. When a user is not found, a generic error message is displayed, rather than a more informative message
4. Clicking on the Search button when the form is empty clears the state and resets the application
5. (Minor) consider adding a hover / active styling on the search button
6. (Potential feature) consider displaying a list of potential search matches (if API allows that) if a user was not found

Fix

• Allow search trigger with Enter keypress
• Remove placeholder text when input is on focus
• Display more descriptive message when user is not found
• Fix app clear state bug when clicking on search button while input is empty
• Investigate API to potentially implement a better search experience