Only work with only web theme

[a-schild]

Various errors occur when the new webmin theme is used.

• Saving of vpn server config (Error 500 with )
• No progress during CA creation (which takes a lot of time, depending the hosts cpu power)
• Create new clients wont work
  And probably many others

Error when saving vpn server config

cat: current: No such file or directory
[04/Feb/2021:12:41:39 +0100] [x.x.x.x] /openvpn/create_vpn.cgi : Missing Content-Type Header
cat: current: No such file or directory
[04/Feb/2021:12:42:22 +0100] [x.x.x.x] /openvpn/create_vpn.cgi : Missing Content-Type Header
cat: current: No such file or directory