(Bug 4860) Pre-fetch textcaptcha items and store them in the DB

We should be nice to both our users and the textcaptcha service. We
pre-fetch several hundred items with a 1-second delay so we don't hammer
the textcaptcha service with too many requests too close together at
active hours.

When we need a captcha, we check our DB first. If we run out, then we
do a remote fetch. This should also make the captcha show up more
quickly to users.
(Bug 4239) Mark deleted crosspost accounts as inactive

Keep the metadata (sans sensitive info), so that we don't break
importing, and we can maybe adjust the crosspost link display settings
later on.

Also adjusts the places where we load the External/Account info so that
we fetch the active status, and filter to only show active accounts in
most cases
(Bug 4869) Added proper layering of entry and header backgrounds
Bug 4859 - Administrator status emails use "maintainer"
http://bugs.dwscoalition.org/show_bug.cgi?id=4859
-- use administrator instead of maintainer
-- slight rephrasing
Bug 4859 - Administrator status emails use "maintainer"
http://bugs.dwscoalition.org/show_bug.cgi?id=4859
-- better phrasing
Bug 4873 - Replace 'maintainer' with 'administrator'
http://bugs.dwscoalition.org/show_bug.cgi?id=4873
-- replace maintainer with administrator in various text strings
-- edit or rename strings to prevent snafus
-- add dead strings to deadphrases
Bug 4840 - Librarian's Dream: header overlaps nav strip
http://bugs.dwscoalition.org/show_bug.cgi?id=4840
-- Remove negative margin in header to prevent overlap
Bug 4822 - Remove extra padding in inline lists
http://bugs.dwscoalition.org/show_bug.cgi?id=4822
-- Remove margin and padding in tags and icon keywords inline lists in various styles
Bug 4782 - Layout styling for contextual hover menu may need looking at
http://bugs.dwscoalition.org/show_bug.cgi?id=4782
-- Update CSS to use new nomenclature
-- Update CSS to remove extra styling such as border-radius
-- Match link colors to background color for better readability
-- Removed now redundant CSS due to better color matching
Bug 4782 - Layout styling for contextual hover menu may need looking at
http://bugs.dwscoalition.org/show_bug.cgi?id=4782
-- cleanup: I went a different way and no longer needed these
Bug 4874 - Strata: 'keywords' label isn't bold on Icons pag
http://bugs.dwscoalition.org/show_bug.cgi?id=4874
-- Bold all labels
Merge pull request #244 from afuna/externalaccount-delete-bug4861

(Bug 4239) Mark deleted crosspost accounts as inactive
Merge pull request #243 from afuna/textcaptcha-cache-bug4860

(Bug 4860) Pre-fetch textcaptcha items and store them in the DB
Merge pull request #252 from momijizukamori/Bug4869/StrataImages

Bug4869/strata images
Merge pull request #253 from ninetyd/bug4859/email_newadmin

Bug4859/email newadmin
Merge pull request #254 from ninetyd/bug4873/maintainer_replace

Bug 4873 - Replace 'maintainer' with 'administrator'
Merge pull request #256 from ninetyd/bug4822/inline_lists_padding

Bug 4822 - Remove extra padding in inline lists
Merge pull request #257 from ninetyd/bug4782/updatecss_popups

Bug 4782 - Layout styling for contextual hover menu may need looking at
Merge pull request #258 from ninetyd/bug4874/strata_keywords

Bug 4874 - Strata: 'keywords' label isn't bold on Icons pag
Merge pull request #255 from ninetyd/bug4840/lb_header_overlap

Bug 4840 - Librarian's Dream: header overlaps nav strip