Add multi vote tests and other fixes

[Megha-Dev-19]

Resolves #63

• fixed the pagination issue in pending requests
• added multi vote and singular vote tests
• added highlight proposal in pending request after vote

[Megha-Dev-19]

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Current status: executed

| Reviewer | Score | |--------|--------| | @Tguntenaar | 5 | Your contribution is much appreciated with a final score of 5! You have received 53 (50 base + 5% lifetime bonus) Sloth points for this contribution

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[Tguntenaar]

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