Update Portuguese translation: split ‘letter’, pen trails, and code generation blocks.
Update further Portuguese translation of code generation stuff.
fixed #526

thanks, @bromagosa, for reporting it!
duplicate and clone nested sprites
export and import nested sprites
double clicking on a sprite in the stage selects it in the IDE
added ‘move’ option to the sprite context menu

lets the user move (nested) sprites in edit mode without changing their
layering, and also sprites marked “undraggable”
Merge pull request #539 from MMSequeira/master

Update Portuguese translation: split ‘letter’, pen trails, and code gene...
updated German translation
fixed #497 (prevent bubble shadows from getting cut-off)

thanks @Hardmath123 for this bug report
keep reporter-result-bubbles within the enclosing scripting pane
Add Portuguese translation of 'move'.

Move was added to the German translation.
propagate HIDE and SHOW to nested sprite parts
propagate DELETE to nested sprite parts
export script pic with result bubble

hidden option in the shift-context-menu of reporter scripts
Merge pull request #540 from MMSequeira/patch-1

Add Portuguese translation of 'move'.
replace the Snap!Cloud with GitHub
Merge branch 'master' of https://github.com/jmoenig/Snap--Build-Your-Own-Blocks
Merge branch 'master' of https://github.com/Gubolin/Snap--Build-Your-Own-Blocks