Cache language list to prevent look up for each book search
Collapse navbar when clicking log out

Also two unrelated improvements:
Fix invalid css (bg color was set to none rather than transparent).
Focus email field when loading Sign Up or Log In.
Time for a less in your face beta tag
Tweak the pagination colors to make it less eye-catching
Fix position of beta stamp when menu is vertical
Merge pull request #148 from andrew-polk/feature/fixBetaStampForXs

Fix position of beta stamp when menu is vertical
HTML tweaks

Move detail modal buttons to the right.
Underline Bloom Editor in navbar.
Left align logo with book filters.
Merge pull request #149 from andrew-polk/feature/htmlTweaks

HTML tweaks
Make download a child of detail
Correct items-per-page position when only one page
Add comment explaining the use of modal-___ classes
Merge pull request #150 from andrew-polk/feature/downloadIsChildOfDetail

Make download a child of detail
Merge pull request #144 from andrew-polk/feature/cacheLanguageList

Cache language list to prevent look up for each book search
Merge pull request #146 from andrew-polk/feature/logoutCollapsesNavbar

Collapse navbar when clicking log out
Merge pull request #151 from andrew-polk/feature/fixItemsPerPage

Correct items-per-page position when only one page
Fix missing book title on preflight screen