* Add permissions system draft
* Fix typo, add missing link, one language change
**Previously:**
>Today web3 browsers like MetaMask always prompt on a per-action basis, but this maximizes security at the cost of user friction. An alternative model of security is to allow applications to request a series of permissions from a user at a time.
**Now:**
>Today web3 browsers like MetaMask always prompt on a per-action basis. This provides security at the cost of substantial user friction. We believe that a single permissions request can achieve the same level of security with vastly improved UX.
**Reasoning:** The former can be interpreted to imply that the permissions model is "less secure." The goal of the updated wording is to preclude that interpretation.
* Add link to active related issue
* Add discussions-to link
* Add header image for proposal
* Add note on domain string
* Update ocap-ld to new name zcap-ld
* Adopt EIP 2255 name
* Fixed spelling
* Fix validations