Issue #2000928 by DYdave: quick fix on hook standard doc block comment format.
Issue #2000928 by DYdave: Make collapse_text_wysiwyg module pass Coder Review.
Issue #2000814 by DYdave: Quick fix on previous commit 9d3ed92, wrong indent introduced.
Issue #2000814 by DYdave: Added feature to allow users to select the state of the collapsible markup to insert: collapse or collapsed.
Issue #1890908 by DYdave: Quick fix of coding standards, mostly wrong indents or end of line white spaces.
Issue #1986878 by proweb.ua, xiukun.zhou: Fixed JS compatibility issue with latest versions of CKEditor 3.6+ and 4.x+.
Coding standards: fixed all validation errors from coder module review.
Adding module's code
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