commit a979ab72811902bf523b9072599dd09bcf1b0448
author Kasper Nilsson <kaspern@google.com> Thu Aug 11 15:57:01 2016 -0700
committer Kasper Nilsson <kaspern@google.com> Tue Aug 16 10:11:43 2016 -0700
tree c73017e074baf6ad2169cff2ea6f7ee2c85f8c61
parent 93a4c8e42d5204664f0ddc93388043d77acd17a6

Implement simple autocomplete for the search bar

This change modifies the existing search bar component by replacing
the existing iron-input implementation with a gr-autocomplete
component. Rudimentary autocompletion for the search bar now exists
-- specific autocomplete features, I.E. backend querying for
possible usernames when 'author:' is entered, are yet to be
implemented.

This task required modification of the gr-autocomplete element to
support multiple search terms -- this was accomplished by the
addition of a boolean prop, 'multi', that is false by default.
When multi is true, the component will only look to autocomplete
the substring from the index of the last space til the end.

Possible enhancements to this change include:
    - addition of a 'delimiter' prop, as opposed to the hardcoded
    space delimiter
    - UI modifications to allow deleting of specific search terms,
    like a multi-select tag-styled input.

Bug: Issue 4276
Change-Id: Ic04981af06ba34dd1d58b023fcf444e4168d6b18