Ensure new claims do not send non-standard inputs

[YashKumarVerma]

@YashKumarVerma can you first create a PR with the following:

• in add claim api, clean the urls, removing all the hashes, query params and add trailing slash.
• write a script to transform the current items for the same.

Originally posted by /hereisnaman in https://github.com/coding-blocks/boss/pull/279#issuecomment-636271489

[boss-contributions-bot[bot]]

Thanks @YashKumarVerma, for raising the issue! 🙌

One of our mentors will revert on this soon. ✅

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