Improve readability by using tables

Sections impacted:

* Folder Layout
* Layout within `app` folder
Merge pull request #1470 from zeppelin/patch-1

Improve readability by using tables
Fix table header alignment
Format command list as table
Merge pull request #1472 from zeppelin/docs-readability

Docs readability
reference bower_components/ instead of vendor/
[gh-pages] - Fix some formatting issues

Fixes some spacing inconsistencies and small typos
proper style structure, polishing, and mobile tweaks
fixed guide-content top margin on >768px screens
added a bit of space between the up arrow and Back to Top
Merge pull request #1481 from jonharmon/gh-pages-v2

Gh pages v2
Merge pull request #1482 from HeroicEric/gh-pages-formatting

[DOCS] - Fix some formatting issues
moved intro animation to jquery, formatted footer
Hotfix table styles

After converting certain parts of "Getting Started", tables look
ugly on ember-cli.com, since Bootstrap leaves `table`s with no
`.table` class almost entirely unstyled.

This is considered as a hotfix, stuff like this should be styled
from CSS rather than adjusting the HTML structure from JS
Merge pull request #1484 from jonharmon/gh-pages-v2

moved intro animation to jquery, formatted footer
Merge pull request #1487 from zeppelin/patch-2

Hotfix table styles
Add js redirect to new page.
Merge pull request #1488 from abuiles/js-redirect

Add js redirect to new page.
fixing broken image url
adding max width for images, so they display alright on small screens