Integrate the claims module

[gavofyork]

No description provided.

[gavofyork]

CC @jacogr

[jacogr]

The metadata fights against this a bit atm, for this -

decl_event!(
	pub enum Event<T> where
		B = BalanceOf<T>,
		A = <T as system::Trait>::AccountId
	{
		/// Someone claimed some DOTs.
		Claimed(A, EthereumAddress, B),
	}
);

It returns types "A" and "B" (which really, could be anything) in the metadata. We don't get A = AccountId, raher only A. It would be better doing (based on the current limitations),

decl_event!(
	pub enum Event<T> where
		BalanceOf = BalanceOf<T>,
		AccountId = <T as system::Trait>::AccountId
	{
		/// Someone claimed some DOTs.
		Claimed(AccountId, EthereumAddress, BalanceOf),
	}
);

[gavofyork]

@jacogr make a PR?

[gavofyork]

nm already fixed.