Implemented bulk tagging operations via single command 'tag'. Add, Delete, Set, and Clear modes are available (add, del, set, clear). Help on command usage is supplied via -help argument.
basic usage: tag <mode> (args)
tag add 1,2,3
tag del 1,2
tag set 1
tag clear
tag -help
Caveats:
Client will attempt to add/remove tags regardless if the selected permanode contains those values. So it will add a tag multiple times and attempt to delete a tag that is not set.
Change-Id: Ib5c8ccc3d74e49701629c37397de478b95db4fd6