Apply Google Code Style scheme

Also remove Lombok plugin.

Change-Id: I2abe84c8e74a4a80542f2e729e7b5ddfbb808877
Ignore IntelliJ specific files

Change-Id: I2ae06bf43a3d218a03d7374db5f7f6121a29d2c2
Allow unix timestamp as index suffix

Change-Id: I5c23f83a71bc20c8c4ba03093bc0abf013f6cc28