Fixed range 1 slider bug issue # 301
Merge remote-tracking branch 'origin/master' into slider_range_one
add localization to unknown variable error
correct translation of 'unshare'; add new translations
Fixed percent symbols in custom blocks

This fixes issue #476
Set Default Save location to Cloud on Snap! load

When Snap! is loaded, Snap! will now check whether a user is logged in
(via the presence of `SnapCloud.username`) and if so, the default save
location will be the cloud.
Added callback to Process
Add localization to number of arguments error and temporary watchers
Correct import translation and add a few missing translations.
update tools with Brain's ignore block
callback is only executed when the outmost block returns a value
Fixed #642, avoid “freezing” when calling CONS on non-list/null

thanks, @brianharvey !
Fixed #364 avoid “freezing” when calling LAUNCH on empty ring
Merge pull request #643 from cycomachead/update-tools

update tools with Brain's ignore block
Merge pull request #641 from bromagosa/contribution

Added callback to Process
renamed Process::callback to "onComplete"
Merge pull request #627 from cycomachead/default-login

Set Default Save location to Cloud on Snap! load
Updated the “About” Dialog

with a mention of support from CDG (SAP Labs)
Merge pull request #623 from natashasandy/master

Fixed percent symbols in custom blocks
integrate percent sign fix for JSLint