Add ACP feature-> Display Karma History
Changing user karma score if deleted from karma history
Adding log to general admin page and code correction
Removed unnecessary code
Fixing codesniffer issues
Renaming $deleteall and $deletemark to $delete_all and $delete_mark
Using acp/karma_helper instead of includes/functions_karma
Adding helper class service and removing use of global variables
Including docblocks for constructor, variables and function
Removing duplicate language variables
Fixing codesniffer issues
[feature/acp] Pass karma table as parameter to acp/karma_helper
[feature/acp] Fix enabling of karma extension for phpBB 3.1.0-RC1
[feature/acp] Use \phpbb\db\driver\factory instead of driver
[feature/acp] Use driver_interface instead of driver_factory in constructors
Getting rid of global variable
Removing global usage
Changing \phpbb\db\driver\driver to \phpbb\db\driver\driver_interface
report_karma() testing

Correcting report_karma() tests
Correcting report_karma() tests