feat(tags Input): add support for pasting a collection of tags

This pullrequest adds functionality that allows a user to paste a
separated string instead of having to type all entries manually. the
pasted string will be parsed to tags and the invalid ones will be
discarded. The separators can be defined with the separatorList
attribute
Merge pull request #2 from DefactoSoftware/featImplementPaste

feat(tags Input): add support for pasting a collection of tags