ENYO-3244: added "saveAll" menu button
ENYO-3244: add 'next' param to saveDoc
ENYO-3244: fix duplicated name bug
ENYO-3244: added saveProjectDocsWithCb to EnyoEditor
ENYO-3244: propose to save file before launching preview
ENYO-3244: propose to save file before build/run/install actions
ENYO-3244: added doc
ENYO-3244: use series instead of waterfall to simplify requestSave callback invocation
ENYO-3244: provide mandatory no-op callback to saveDoc
ENYO-3244: pass context to callback
Merge pull request #745 from enyojs/ENYO-3244

ENYO-3244: added "saveAll" menu button