Update create Main Proposal & Update Quorum/Referendum Config

[AndlerRL]

Hello there! I have been using the contract for the creation of proposals and amendments and I was looking at the validation for the budget argument, where it verifies if the author has available the declared budget amount once it attempts to create it. I think it is good to have it however, for the first version it would be ideal to remove this verification upon main proposal creation since we want to leave that open.

Also, I have been looking at the main proposal configuration and I'm wondering how possible is to update the base configuration for all main proposals? The desired configurations for prevote and vote phases are:

vote_threshold: 15% + 1 (higher than 15.00%)
quorum: 10,000.0000 MOCKEOS (10k MOCKEOS)

Can we make these two configuration parameters as we have them for the minStake? So at any time, we can update that without the need to update and re-deploy the contract.