Merge pull request #338 from grigoroiualex/master

Issue #335 - Solved
More compact display for the "show all definitions" link. Addresses #335.
Use default value for GET argument. Addresses #335.
wording change
Tweaks for the wotd by email script.
more tweaks for the wotd-by-email script. Fixes #322.
Make uploaded images world-readable