Display error for a second bounty creation for the same challenge

[sachintom999]

• Currently, if a user creates a second bounty for the same challenge, there is no error displayed on the frontend. This PR fixes that. It shows the error now.

Before fix

After fix

[adrianmcphee]

@sachintom999 we want to have multiple bounties for a single challenge, provided the bounties relate to different skills - this is so that you could have a single Challenge that has 5 points for UX Design, 10 points for Frontend Development etc. Therefore the rule should be that there cannot be two bounties with the same Skill on a single Challenge. Multiple bounties for different skills on a single bounty is fine.

[dogukanteber]

Thank you @sachintom999. I can see why you created this PR. However, as @adrianmcphee said, this is the correct behavior. The project has a lot of moving parts and this part is not documented clearly. Sorry for that.

If you want to continue contributing to the project, I will create some issues that would benefit us. You can choose any issue that you want to work on.

Unrelated Note: I also saw your previous pull request, #100. We had a hectic weekend to implement some features and could not look into that. I am planning to create CONTRIBUTING_GUIDELINES.md file to ease the development. That PR is related to that. Therefore, I did not review it yet. I will open an issue for that and include your pull request. You can also create issues when you see a bug or have an idea about the project.

Once again, thank you so much for your help. We deeply appreciate your work.

[sachintom999]

@adrianmcphee @dogukanteber

Thanks for review comments. Noted.

Going forward, I will create Issues, get it verified from your side and then will start working on it.

[dogukanteber]

Perfect 👌