Add Devuan basic support

This merge request adds a basic support for Devuan (www.devuan.org)

See merge request !553

Certbot dir

this allows **certbot** to clean **.well-known/** and stops serving **emtpy.dir** file in all vhosts

See merge request !546

2007-2017 in LICENSE file



See merge request !550

unused index.htm with security vulnerability

the file **interface/index.htm** is unused, and in case someone is using ```interface/``` as **DocumentRoot**, then that someone would expose ```interface/ssl/ssl/ispserver.key```

See merge request !549

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

Seo redirects

seo redirects improved, specially **'*_domain_tld_to_www_domain_tld'** and includes !543

See merge request !544

Server alias

before:
```
ServerAlias domain
      ServerAlias alias0
      ServerAlias alias1
```
after (8 alias per line example):
```
ServerAlias www.kljsf.com kljsf.com www.kjdf.org kjdf.org www.klsdjf.put klsdjf.put www.skdf.jak skdf.jak
ServerAlias www.abc.com abc.com www.bca.com bca.com www.ksd.com ksd.com www.lkjas.com lkjas.com
ServerAlias www.kak.com kak.com www.skdf.jaku skdf.jaku www.klsjdf.jks klsjdf.jks www.lksdjf.kj lksdjf.kj
ServerAlias www.lkdj.kjdf lkdj.kjdf www.klsdjf.jksdf klsdjf.jksdf www.hjd.hja hjd.hja www.lksjdf.ujk lksjdf.ujk
ServerAlias www.lksjdfl.lskdjf lksjdfl.lskdjf www.kjsdlkfj.sdfj kjsdlkfj.sdfj www.lksdjf.sdkf lksdjf.sdkf www.kjflksjf.ksdfl kjflksjf.ksdfl
ServerAlias www.lskdjf.ksdf lskdjf.ksdf www.lksjdf.lksjdf lksjdf.lksjdf www.kjhf.ksjdf kjhf.ksjdf
```

See merge request !543

This reverts commit 4e3be3e3

Install/tpl to server/conf

copied **install/tpl/apache_apps.vhost.master** and **install/tpl/apache_ispconfig.conf.master** to **server/conf/**

See merge request !540

Update vhost.conf.master



See merge request !541

pureftpd mysql transactions off due to myisam engine

disabled mysql transactions, because the engine of **ftp_user** is MyISAM and removed empty lines

See merge request !538

fixed mysql password update on mysql > 5.7

See issue #4321

Closes #4321

See merge request !533

Regression: #3931 Call to undefined function swriteln()



See merge request !534

See issue #4321