second part of the fix for #22018: Empty Copy and paste leads to corrupt survey: avoid pasting empty stuff into clipboard

fixed several issues that lead to duplicates in tables, 22018: Empty Copy and paste leads to corrupt survey

(cherry picked from commit cfd42f69)

21224 - add lng var for iass copy

Set Table ID before calling parent constructor.

(cherry picked from commit 0267fa8a)

(cherry picked from commit eb4b2a07)

(cherry picked from commit be1dafe9)

(cherry picked from commit 2e8b6b4f)

fixed (hopefully all) image scr conmversions as well as linebreak issues in toJSON per qtype (mantis 20325)

made workaround for cloze test question the workaround for all SAformatted export contents (mantis 20325)

fixed mantis 0020320: Embedded question with image in feedback: image not shown (ilAssSelfAssessmentQuestionFormatter)

Niels Theen authored Nov 08, 2017 and Michael Jansen committed Nov 08, 2017

(cherry picked from commit 9df1e62f)

(cherry picked from commit 1e2aa218)

Niels Theen authored Nov 08, 2017 and Michael Jansen committed Nov 08, 2017

(cherry picked from commit 0c1539fa)