convert chart elements page to .ui

Change-Id: I7b6dba29622dc1eaa7e12c58084c6ffed19fe886
missing string resources

regression since 1a404132d94af93d99b2ab65185d2c1b3efd78d4

Change-Id: Ied3080d101783e14e3e620d7cd00b7b482a1a8af