Tab cycling order needs to update when tab is pinned

[stshank]

Describe the issue you encountered:
When I converted a tab to a pinned tab, using allt/cmd-tab to cycle among them treated it as if it were in its original unpinned position.

Expected behavior:
Pinned tabs should move to the first tabs in the cycling order (when starting from the leftmost tab)

• Platform (Win7, 8, 10? OS X? Linux distro?):
  Windows 10 and OS X
• Brave Version:
  Brave: 0.10.0
  Electron: 0.37.8
  libchromiumcontent: 50.0.2661.102
  V8: 5.0.71.48
  Node.js: 5.10.0
  Update channel: dev
• Steps to reproduce:
  1. Pin tab among a group of tabs. Tab shifts left to the pinned area
  2. Use cmd-tab to cycle among tabs

Related #149

[bradleyrichter]

I think this is related: (see lonely pinned tabs)

In this case, the tab set should have collapsed to the first set, not stay on an empty #2 set.

Pinned tabs need a different rule set (or more rules) so that they don't intervene with the normal expected tab behaviors.