New tabbed pane for overview of customers. 
Customer and employee entities have been added to the domain. 
Some SQL-code in 2SemesterProjekt.sql is added too.
Merge branch 'master' of https://github.com/wazaap/2SemesterProjekt.git
New tabbed pane for overview of customers. 
Customer and employee entities have been added to the domain. 
Some SQL-code in 2SemesterProjekt.sql is added too.
getCustomers()-function is being developed.