Merge origin/master, fixed bug

Conflicts:
	src/memo/view/CustomAccordion.java
	src/memo/view/RootLayoutDesign.fxml
Merge origin/master

Conflicts:
	src/memo/view/RootLayoutCode.java
scrollPane of cardSets improved
themeAccordion almost completed. CheckBoxes aligned relative right side (one problem)

- When card is selected then text color became white
ThemeAccordion styling completed (still in progress auto-scrolling)