Move Dapps files from @parity/shared ; display icons of builtin dapps from filesystem (#114)
* Remove 'views' dapps * Remove superfluous variable declaration * Update @parity/shared dependency * Move Dapps files from @parity/shared * Update DappsStore tests (defaultDapps) They were previously outdated in @parity/shared. Removed the test "saved views keeps non-specified disabled keys" because we don't have any dapp to test against in dappsBuiltin.json (no builtin dapp with a defined id and with visible set to false) * Fetch icons of builtin dapps from filesystem using manifest.json * Use require instead of window.require in tests * Add test for built-in dapps * Use absolute paths for dapp icons * Update `@parity/ui` dependency * Update `dapp-dapp-methods` & `dapp-dapp-visible` dependencies Had to specify the exact rev in package.json because npm somehow couldn't properly update the dependencies otherwise: dapp-dapp-methods would overwrite dapp-dapp-visible in package-lock and vice versa. * Factorize getBuildPath() into util/host.js