Fix stake delegation refresh on create request

[Megha-Dev-19]

Resolves #248

• Added hover to 'Create request' dropdown
• Fix the refresh issue with create stake request, update tests to use sandboxrpc to create proposals
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[Megha-Dev-19]

@race-of-sloths include

[race-of-sloths]

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Current status: executed

Reviewer	Score
@petersalomonsen	8

Your contribution is much appreciated with a final score of 8!
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[petersalomonsen]

@race-of-sloths score 8

[petersalomonsen]

Great to see that the sandbox is used even more for the tests. Deserves a high score!