Fix merchants URL color

Add missing protocol upgrade tag

Fix article filename

Add Localmonero to Merchant list

Add thebigcoin.io to merchants.yml

Add noreferrer + noopener attributes to blank targets

Update roadmap.yml

* fixed filename so it can be rendered to HTML

Increases privacy by requiring supported browsers to *not* send a
referer header. Also prevents tabnabbing.

Fix #406

Add allforcrypto.com to merchants.yml and alphabetically sort merchants

Fix links to RPC methods in RPC guides

Improve Developer Guides layout & code blocks

Fix a FAQ tab

touching up the wording on the main page

Update "Mining Monero" page

Update "Contributing to Monero" page

Resources: link to single-policy VRP on frontpage

Included Google Analytics

Scheduled protocol upgrade blogpost

Fix #403

This PR includes the following:
- Fix issue with daemon-rpc example styling.
- Remove references to deprecated class “cli-code” and replace with
code blocks where necessary.
- Add new line between all RPC calls and outputs.
- Use 3-apostrophe code blocks instead of indent for all curl examples
for markdown neatness and to enable future syntax highlighting.