New layout for the "Choose your wallet" page

Live preview: http://bitcoinwallet.us.to/en/choose-your-wallet

This new layout is addressing many issues and feedback, with a focus on the following points:

- Providing increased transparency about security and the zero trust model.
(making it a better education material and providing incentives to developers to improve their wallets over time.)

- Easing the selection process for the visitor.
(by simplifying the page and allowing users to filter wallets by platform, with access to clear information and screenshots.)

- Allowing the page to scale with the increasing diversity of wallets.
(by not isolating wallets into single categories anymore and introducting anticipated hardware wallets.)

- Encourage diversity and decentralization.
(by not recommending a single wallet anymore, and by rotating wallets daily by « zero trust levels » - full nodes followed by SPV wallets followed by hybrid & multisig wallets followed by web wallets.)

--

The following points are reviewed for all wallets:

- Private keys
What control the user has over his bitcoins?

- Block chain
How secure and « zero trust » is payment processing?

- Transparency
How transparent and « zero trust » is the source code?

- Environment
How secure is the environment of the wallet?

- Privacy
Does the wallet implement change addresses properly? (for now)

--

Web wallets controling users private keys were previously hidden behind a strong warning. 

The new page is displaying the same warnings and a few others from the wallet bubble. Web wallets are sandboxed out of all categories unless they provide control over private keys to the user and a native app that signs transactions locally. Future certification standards could possibly allow web wallets to provide enough transparency to be listed outside of the sandbox in the future.

--

Bitcoin Core previously had a complete paragraph inviting users to adopt full nodes.

The new page instead always displays Bitcoin Core as the first wallet and the reasons why users should choose Bitcoin Core are better outlined by its good zero trust score. Bitcoin Core is also contextually linked from other wallets' disclaimers.

--

This layout has been tested on recent and older versions of CH, FF, OP, IE, SA, Android & iPhone. A few small bugs exist for older browsers, IE6-7 isn't supported for now.