Updating dialogTitle prop to be a string or element

[4-Eyes]

Description

• Adding the ability to customise the dialog title with JSX, rather than it just being a string.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested

• Adding to the documentation page for the DropzoneDialogBase an example that includes a custom dialog title with an 'x' button for closing the dialog.

Test Configuration:

• Browser: Chrome Version 84.0.4147.105

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[panz3r]

Hi @4-Eyes ,

Thanks for your contribution and sorry for the delayed answer.

I added some comments and I'd ask you to also update TS typings to match the changes.

[4-Eyes]

Apologies for the slow response. I believe I've addressed all your comments.

[panz3r]

LGTM 👍

@4-Eyes , thanks for your contribution, now it looks good but unfortunately GitHub says I cannot merge it because of conflicts, can you please rebase your changes (only the revenant ones) onto master and update this PR?
Thanks again

[4-Eyes]

@panz3r the PR should be updated now.

[panz3r]

LGTM 👍