Performance Fix for copy-paste large set of entries and adding, deletion...

... above it

Issue: #11
Signed-off-by: Janet Jin <janet.jin@turn.com>

Clean roll back changes

Issue: #11
Signed-off-by: Janet Jin <janet.jin@turn.com>

Changed undefined judge logic

Issue: #11
Signed-off-by: Janet Jin <janet.jin@turn.com>

Conflicts:

	select2.js

Signed-off-by: Janet Jin <janet.jin@turn.com>

Conflicts:

	select2.js

Signed-off-by: Janet Jin <janet.jin@turn.com>

Performance Fix for copy-paste large set of entries and adding, deletion above it

Issue: #11
Signed-off-by: Janet Jin <janet.jin@turn.com>

Conflicts:

	select2.js

Signed-off-by: Janet Jin <janet.jin@turn.com>

Clean roll back changes

Issue: #11
Signed-off-by: Janet Jin <janet.jin@turn.com>

Conflicts:

	select2.js

Signed-off-by: Janet Jin <janet.jin@turn.com>
this can be simplified to `_update = args[2] === 'update';`