[IX] Click to fill on text properties, issues with new line chars

[txau]

When using click-to-fill on a text property there are two issues that are hindering the user workflow:

1. The copied selection does not convert the new line chars to a white-space char. Maybe there is no new line char, in which case we need to figure out a way to process segments belonging to different lines. The result is a concatenation of words that needs to be manually fixed:

As you can see the copied text is:

37/42. Contribution to the implementation of the joint commitment toeffectively addressing and countering the world drug problem withregard to human rights

Where "toeffectively" should read "to effectively" and "withregard" should read "with regard".

2. The input box is too small for big texts. This may be a wider issue and maybe replace regular input box for titles with a multiline text box? Some title can be really big, such as:

Report on the situation of human rights in Darfur prepared by the group of experts mandated by Human Rights Council resolution 4/8 presided by the Special Rapporteur on the situation of human rights in the Sudan and composed of the Special Representative of the Secretary-General for children and armed conflict, the Special Rapporteur on extrajudicial, summary or arbitrary executions, the Special Representative of the Secretary-General on the situation of human rights defenders, the Representative of the Secretary-General on the human rights of internally displaced persons, the Special Rapporteur on the question of torture and the Special Rapporteur on violence against women, its causes and consequences*

[RafaPolit]

Coordinate with @gabriel-piles to check if he already solved similar issue on the ML services.