Governance proposals list view page

[webbushka]

Summary

We need to add a page to the explorer that shows a list of governance proposals

Problem Definition

We need to be able to see a list of all governance proposals made

Proposal

• Using the redux setup created in Add Governance Redux actions, reducers and hooks #133 to pull a list of governance proposals
• Render the list into table with the following columns
  • id
  • title
  • status
  • deposit percentage
  • submit time
  • deposit end time
  • voting end time

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