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This includes a handful of minor layout fixes after close examination of
the network settings UI.

* Spacing issue introduced with paper button changes:
  https://chromium-review.googlesource.com/907856
* Alignment issue introdiced when fixing click targets:
  https://chromium-review.googlesource.com/952033
* ip-config JS console error causing details page to be incorrect
  initially (old issue, but probably exposed with recent refactoring)
* Network security icon bug in detail page that has existed since 64
  (no bug filed that I could find)

Only the security icon bug impacts 66 and it's confusing but minor.

Bug: 821733, 821720
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I877aeb93a232f6c656d73ac7c345f63e00cbf125
Reviewed-on: https://chromium-review.googlesource.com/963303Reviewed-by: Toni Barzic <tbarzic@chromium.org>
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543196}