[BWS] feat(templates): removes horizontal rule from emails

[mahume]

Changes

• Removes the line between the header copy and description copy for incoming and outgoing transaction email templates for all supported languages.
• formats to add a newline to the eof

Testing notes for reviewer

1. Ensure dependencies are up to date in bitcore repo: npm install
2. run Bitcore Wallet Service locally in /packages/bitcore-wallet-service

npm start && tail -f logs/bws.log

3. Navigate to bitcore/packages/bitcore-wallet-service/src/scripts in a new tab
4. Run each of the following scripts individually with your email:

node preview-email.js new_incoming_tx en send [email protected]
node preview-email.js new_incoming_tx es send [email protected]
node preview-email.js new_incoming_tx fr send [email protected]
node preview-email.js new_incoming_tx ja send [email protected]

node preview-email.js new_outgoing_tx en send [email protected]
node preview-email.js new_outgoing_tx es send [email protected]
node preview-email.js new_outgoing_tx fr send [email protected]
node preview-email.js new_outgoing_tx ja send [email protected]

5. A new browser window will open with the preview.
6. The <hr/> should be removed