Don't load pacer documents into Open Library.
Moved ia prefixes to ignore to config file.
Set socket timeout in new-solr-updater.

Sometimes archive.org requests blocks forever. Setting a timeout will
make the request fail instead of waiting forever.
typo s/socket.settimeout/socket.setdefaulttimeout/
On /libraries page, group libraries in Canada by state (closes #177)
Added option to download loan stats of a library (closes #179)
Replaced "subject search" on subject page with "search within this subject" (closes #184)
Added --ignore-ia-scans option to new-solr-updater
typo
another typo
Added --no-commit option to solr-updater
Made LOAD_IA_SCANS=False by default in new-solr-updater.
Reordered the info in support email notification.

Jessamyn, our support volunteer, has requested for this change.
Commented links to html index.
added back the </p> tag commented by mistake in 48baa65. (tx @bencomp)
small tweaks to improve screen reader experience.

* changed "Encrypted Diasy" to "Download Protected Daisy"
* added heading "Site Search" to top search box.
Added a hack to add subjects when indexing /books/ia:xxx pages.

This is required to build "Popular Print Disabled Books" subject.
fixed a typo.
Another change related to the hack to add subjects when indexing /books/ia:xxx pages.
Added author name to alt text of book covers in the carousel.