OO-2871: allow the hotspot interaction to be responsive on small screen, allow the author to resize the background images

OO-2868 improve copy/paste links by wrapping them in an input field for proper selection without trailing whitespace

OO-2924: delete the three specialized course log exporter, remove the explanation in the spring file

OO-2488: enhance the rich text editor to have 3 levels of representation: one line, multi-line and formatted, set the one line option for the single and multiple choices answers in the editor for QTI 2.1

OO-2898: Use the blog/podcast metadata from the resource and hide the edit button in the blog/podcast

OO-2895 add css class to all file elements and hide error icon that clashes with file element chooser

OO-2844: add option to show the full text search to guest users, update check access of the different indexers, remove the context aware full text search in forum if the option is disabled