Remove underscore from class LocalisationCache_BulkLoad

Part of program to remove underscores from class names. Checked core and
600+ extensions for occurrences. All uses are in core, and are updated in
this change.

Change-Id: Ib157c3cf209677718ff184552cf872b1d3f4e969
Merge "Remove underscore from class LocalisationCache_BulkLoad"