Detect backdoor batel

Added one index per category plus a glonal index. Added bash script to (re)generate indeces. Removed malware/MALW_AdGholas.yar

update ruleset

Delete COZY_FANCY_BEAR_modified_VmUpgradeHelper rule

Deleted COZY_FANCY_BEAR_modified_VmUpgradeHelper

rule Invoke_mimikittenz

Additional rules #145

https://github.com/Yara-Rules/rules/issues/147

Delete Space

Duplecities. We delete MALW_Miscelanea duplicates.

Duplicate rule