Merge pull request #1050 from cesine/master

Release v1.70.1

to close the issues, released sat 2pm
changed the default license and terms of use
adding popover messages for terms of use
updated handlebars fixes #1063
add explanation for terms of use & license popover, delete messages.js as it was no longer used
added explanation popovers
added explanation for terms of use and license
Update corpus_edit_embedded.handlebars

very minor change before merging
Update Corpus.js

very minor change before merging
Update Corpus.js
bringing in only modifications

to corpus terms and license, not formatting changes
Merge remote-tracking branch 'hisakonog/master'

kept changes to corpus terms but not formatting

Conflicts:
	backbone_client/corpus/Corpus.js