Re-structure design and layout

[saivann]

This pull request can be previewed live here : http://bitcoinhome.zapto.org/en/

Most important changes in this pull requests:

• Right buttons are removed and merged with the menus.
• A new introductive home page with WeUseCoins video.
• A new "Getting started" page with links to external merchants and exchanges directories.
• A re-design for "Community", "Resources" and "Download" pages.
• New links to bitcoinmining.com, coindesk, thegenesisblock, usebitcoins.info, howtobuybitcoins.info and letstalkbitcoin
• Titles and pages summary are consistent and centered.

This work has been done with the following goals in mind:

• Provide a better introduction to Bitcoin.
• Bring users to inform themselves before anything.
• Link more contextual useful resources with an acceptable level of warnings.
• Offer a more consistent, sober and readable layout.

Tested browsers:
IE 6+
FF 3+
OP 10+
SA 3+
CH --
Android 2.3

Future improvements:
I planned to replace the About page by a FAQ later, and rewrite the Innovation page.

Migration:
Deprecated transitional HTML and CSS code is isolated in such a way that previous layouts will remain online for translations until they have been updated, after what it will be possible to drop this code.

Yes, it's a lot of changes:
Sorry for the huge pull request, doing these changes individually would produce an inconsistent result. I have already pushed many non-controversial changes to reduce the size of this pull requests as much as possible.

[luke-jr]

Looks okay on Qupzilla. Too many changes to look at each one individually right now...

[saivann]

Sure, I will let at least a week for review. And re-ask one day before merging.

[gmaxwell]

Still reviewing, but I like the changes a lot so far.

[bitcoinuser]

Hi,
I think the (Find merchants) on http://bitcoinhome.zapto.org/en/getting-started shouldn´t use a service where the information is not free (can´t be extracted).
Find merchants should link to a service where the data is free to any use, something like www.coinmap.org (Places information is added and extracted from www.openstreetmap.org)

[saivann]

Portable directory data : I agree on this. That said I think that these three points have a greater priority:

1. Have both a list of virtual businesses and a map for physical businesses.
2. Allow visitors to submit new businesses without having any particular skill.
3. Have a rating system to organically improve directory listing over time.

So far, it seems like usebitcoins.info is the directory that fulfills all of these needs. Data is public, so it could still be extracted with a script if someone really wanted to do it ( but if you want to suggest a concrete way to improve this, I invite you to contact the owner of usebitcoins.info ). Of course, if a better directory comes along, the link could be changed. Or maybe we can find a way to display more than one directory.

That said, I tend to think that fragmentation and duplication is not helpful in this case both for people operating the directories, businesses who want to be listed, people who submit businesses and people who are searching for businesses. Unity would make a very good and efficient experience for anyone, as long as it's possible.

[saivann]

I plan to merge this pull request in 2 days. More reviews are welcome. Especially reviews for typos and other text improvements ( in _translations/en.yml ).