fixed missing pass result recalculation when using corrections and reached points does not differ / maximum points were not rewritten

fixed mantis 0023261: LoK-Ex-Import führt zu Fragen-Doubletten ohne Kompetenzen (fixed by filtering on question duplicates, import seems to create originals behind a duplicate - both staying in the test)

Merge branch 'fix/0023115/5-1/showing-bibliographic-list-brings-class-ilimagelinkbutton-not-found-bug' of https://git.studer-raimann.ch/ILIAS/Core into release_5-1

(cherry picked from commit 14a3122c)

fixed wrong selection of participant passes that causes wrongly aggregated answer behaviours for the corrections tab

(cherry picked from commit 35dd95e5)

Alexander Killing authored Mar 15, 2018 and Bjoern Heyser committed Jun 02, 2018

fixed bug #22708: Cloze Questions in SCORM Learning Module: Correct answers are not shown in Firefox.

fixed // mantis 0020078: Numeric gap accepts formulas but should only accept nummeric values // 0022929: Failed test: Numerische Antwort Frage erstmalig beantworten

html-purify essay submissions only when html is detected, changed formaly unqualified detection of html content

fixed non available trigger Save contributet by assTextQuestion itself (formaly only when charcounter in use)

changed hint accoding to the behhaviour that nothing get cut on exceeding the limit, fixed letter count in solution output to not consider html of any kind, streamlined strip and decoding behaviour with js check during getTestOutput