- removed master_directive_snippet code that was (in 2016) accidently backported from master but never used

- move all updates to onAfterUpdate
- remove server parts that are not needed

Till Brehm authored Mar 05, 2017 and Marius Burkard committed Sep 14, 2020

improved ftp regex for shorter directory

for example: **/www/0/1** this directory throws **directory_error_regex**, that's why **7**

See merge request !545

(cherry picked from commit a9e7cc14)

f8635ed3 10 => 7