Save the PID in DB and add a kill button

[jadkaady]

I want to thank you for the effort you put into this. It is very useful.

I am excited to add new feature and make this script better.

One interesting one is as sometimes tomcat's shutdown process takes a lot of time and occasionally hang, it is useful to save the PID of the process in the database and use a kill button to kill this pid "kill -9 PID".

What do you think?