Merge pull request #31 from jmoenig/master

Update CS10 Fork
use right arrow for list tools blocks; update images and symlink for compatibility
update word->sentence block spec; replace xml file
add symlinks for current block names
add new help images for modified list and sentence blocks
Morphic: Prevent default action for ctrl-/cmd-key events

… and allow using these for Snap! without having Chrome trigger its own
actions for them
Snap.html: Focus the world canvas on startup

so Snap reacts to keyboard events right away (without having to click
on the IDE first)
Threads: new Variable data structure

for refactoring upvar references, not yet used anywhere
Search Blocks feature, keyboard shortcuts

Thanks, Kyle, for designing and architecting the search blocks feature!!
prepare release

correct last-changed-date
Add localization to connection error message.
Add new Portuguese localizations for stage size, flat line ends, dates sensor block, and Snap\!Cloud stuff.
Merge pull request #33 from jmoenig/master

update cs10 fork
Fixed #445 (minor search + zoom issues)
Merge pull request #443 from MMSequeira/master

Update to Portuguese (Portugal) translation and a few new localizations
Localization additions and Portuguese translation update, thanks, Manuel!
Show last-changed-timestamp of cloud projects

display a tool-tip “bubble” in the “Open-Project” dialog next to the
preview field
added graphics effects that work for all redraws; incorporated most recent updates to Snap!
changed graphicsChanged boolean to a function
good to go for stagemorph