Remove refresh button and check for clients automatically

[furkanarabaci]

Add a thread or an event to check change of processes

[furkanarabaci]

Also do with the best and efficient way. Current way could malfunction the program, if user closes a process and opens another, then refreshes, the processes which are bidden could cause some conflicts.

EDIT : This is fixed in last pull request :)

[furkanarabaci]

Thread added. Solution is somehow dirty but its efficent.