Usability improvements for the Web Client

The following usability improvements for the Web Client have been made.

Warning message when printing large cases (#667199)

A browser‑based confirmation dialog is now shown before printing a case that exceeds a configurable number of history entries. The threshold is defined by the new page customization attribute ticketPrintWarningEntries in TicketPanel. The default value is 1000.

In addition, the print action has been changed to a pure client‑side operation to eliminate background AJAX calls that could cause server crashes.

Font family handling in rich text editors improved (#667619)

The rich text editors in the Web Client and the Web Admin Suite have been improved so that the font family is not set for the text unless the user explicitly selects a font family in the editor. This avoids injecting inline font-family styles which interfere with the text display in email clients.

The text in the editor now inherits the client's defaults and the font family selector shows Font Family until an explicit font family selection is made.

Font size handling in rich text editors improved (#667692)

The rich text editors in the Web Client and the Web Admin Suite have been improved so that the font size is defined in pixels (px) instead of points (pt).

In addition, the font size is not set for the text unless the user explicitly selects a font size in the editor. This avoids injecting inline font-size styles which interfere with the text display. The text now inherits the client's defaults and the font size selector is always shown as an icon.