sphinx: fix up some trademark and branding issues

The following changes were required after a review of trademark and
branding guidelines:

1. add (R) to 'Yocto Project' on the top left (above the logo)
2. Fix up the capitalization of the  main page title
3. Add the copyright/legal blurb at the bottom of the page

For 3. it turned out to be simpler to override the whole footer.html
template, and maintain our own version. Also I took the liberty to
remove the 'next' and 'previous' buttons since I believe they are not
especially useful, given the navigation bar on the left side.

Reported-by: Tracey Erway <tracey.m.erway@intel.com>
(From yocto-docs rev: a29ee99f81aa5b3cc66493e79712a3b5dc31e23f)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 6bae1372218e0b10258e4fa6fef72fc1708a329c)
Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/_templates/footer.html

@@ -0,0 +1,12 @@
+<footer>
+  <hr/>
+  <div role="contentinfo">
+    <p> A Linux Foundation Collaborative Project.
+        <br> All Rights Reserved. Linux Foundation&reg; and Yocto Project&reg; are registered trademarks of the Linux Foundation.
+        <br>Linux&reg; is a registered trademark of Linus Torvalds.
+        <br>&copy; Copyright {{ copyright }}
+        <br>Last updated on {{ last_updated }}
+    </p>
+  </div>
+</footer>
+

documentation/conf.py

@@ -27,7 +27,7 @@ release = current_version
 
 
 # -- Project information -----------------------------------------------------
-project = 'The Yocto Project'
+project = 'The Yocto Project \xae'
 copyright = '2010-%s, The Linux Foundation' % datetime.datetime.now().year
 author = 'The Linux Foundation'
 

documentation/index.rst

@@ -5,8 +5,8 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-Welcome to The Yocto Project's documentation!
-=============================================
+Welcome to the Yocto Project Documentation
+==========================================
 
 |