paypro: add DERtoPEM and PEMtoDER tests.
paypro: start using our own DERtoPEM functions so we don't have to require jsrsasign.
paypro: minor - remove useless text processing.
paypro: remove all references of KJUR.
paypro: move root certs to common.
paypro: remove x509.js
paypro: add isTrusted function to RootCerts.
paypro: cleanup browser/build.js.
paypro: split up paypro into node/browser/common.
paypro: fix browser signatures with KJUR. move pem/der functions to common.
Merge pull request #435 from chjj/paypro

WIP: BIP-70 x509 signing and verification
removes unused / obsolete class "Sign.js"
paypro: fix handling of pki_data - cert arrays.
paypro: alter tests to make sure this pki_data bug does not happen again.
Merge pull request #445 from matiu/feature/cleanup01

removes unused / obsolete class "Sign.js"
Merge pull request #446 from chjj/paypro

PayPro: Fix payment protocol with regards to pki_data DER certs
add fromPubKey to SIN
fix: typo - s/Payment/PaymentACK/
Merge pull request #447 from chjj/typo

fix: typo - s/Payment/PaymentACK/
support uncompressed pub keys also