Merge branch 'B7974-TinyMCEReadOnly' into 'master'

B7974 tiny mce read only

See merge request !215
3 jobs for master in 2 minutes and 33 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Before
passed documentation #4288

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  Build
passed snapshot #4289

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  Selenium
passed selenium #4290

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