[horde] Display Problem with PHP7.3

[Twilek]

> To restore the tabs, you need to make a minor edit to one file:- >  
> >That should clear up the tab problem. The errors you've pasted are  
> unrelated >to that. On my system, I had to update a few Pecl  
> extensions to install >PHP7.3 versions   Hi Allan,  your fix worked  
> beautifully, thank you. I am trying out php 7.3 now and by and large  
> horde works. I found out that missing photos in the addressbook were  
> due to  a missing gd extension. Now I am still searching why some  
> emails (especially non html mails) cannot be rendered). It reads  
> "The message part may contain incorrect character set information  
> preventing correct display.".  It comes from the  
> lib/Mime/Viewer/Plain.php. Maybe my mime setup in 7.3 is broken but  
> I have no clue how I could fix that. The parts that are not  
> displayed can be opened almost like an attached file (There is a  
> text icon then the word "Text" and the Size in KB and then the  
> download and print button). I haven´t found the  reason or the  
> missing extension yet (I have alls php mods from 7.2 installed and  
> enabled in 7.3). And the log is filling up the the warning  
> 2018-10-25T20:26:25+02:00 WARN: HORDE [horde] PHP ERROR: Cannot  use  
> a scalar value as an array [pid 19423 on line 154 of  
> "/usr/share/php/Horde/Autoloader/Cache.php"] with almost every click  
> I make.  Regards  Henning