Add controller for getting settings
Add controller for saving settings
Add column width saving on change to front-end
Set UserSettings column-fields length to 3000 character

	Oracle uses default length of 256 character and saving
	only width of each column requires nearly 1700 characters
	so we had to increase the length and then add some "padding".
Add javascript functions for fetching user settings
Add column location handling to settings saving
Remove unnecessary import
Add filters-variable to UserSettings for filters-to-be-saved
Make filters to be saved with other settings
Change saveSettings column data to be array

	Using object for mapping column data causes
	lot of redundant data to be transferred ( ca.
	1000 char ) so to reduce that array is used.
	Array contains column position as 1st item,
	column width as 2nd item and column visibility
	as 3rd item.
Change name of onColumnChange() to saveSettings()
Make save/fetchSettings to use correct column-variable
Add visibility of column to be saved
Merge branch 'addSettingSavingToFrontEnd' into dev

Conflicts:
	src/test/java/edu/helsinki/sulka/controllers/LocalStorageControllerTest.java