fix relaunching browser code
reject pending _openDeferred before disconnecting
Initial implementation search exclusion using project-based view setting.
Remove an incorrect assignment.
Switch to global view state instead of project-based one and also limit it to ten globs.
code review changes
better handling of unloadAgents()
re-use _openDeferred object
reconnect() and Inspector.Page.reload() need to run in parallel
Fix JSLint error for extra trailing whitespaces.
New Insert Code Hints with Tab Preference
Merge remote-tracking branch 'origin' into rlim/search-exclusions
First pass at UI for Find in Files exclusion filters. Not wired up to
seach implementation or prefs yet.

Changes the search bar to use ModalBar's autoClose behavior; no longer
assumes its code is the only thing to ever close the bar. Adds a new API to
ModalBar to allow the search bar to be 'locked open' when it would normally
close, as Find in Files needs for its no-results state and when the filter
editor dialog is open.
Merge remote-tracking branch 'origin/rlim/search-exclusions' into pflynn/search-exclusions

* origin/rlim/search-exclusions:
  Fix JSLint error for extra trailing whitespaces.
  Switch to global view state instead of project-based one and also limit it to ten globs.
  Remove an incorrect assignment.
  Initial implementation search exclusion using project-based view setting.
Wire up file exclusion UI to Find in Files search code & preferences.
Centralize code in FileFilters module. Switch prefs from single set of at
most 10 globs to an MRU list of at most 10 separate filters, each of which
is an unlimited set of globs. Properly update dropdown UI when editing
dialog is dismissed
use styleSheetAdded and styleSheetRemoved to replace deleted getAllStylesheets API
fix related doc ref count errors
if page changed during live preview statup, then close
Hoist out a generic DropdownButton widget from CSSInlineEditor, and use it
in FileFiters picker UI also, replacing the <select> element it used before.

Further enhance ModalBar to accept focus going to popup elements outside
its DOM hierarchy if they point back to the ModalBar as the popup's opener.
fallback to getAllStyleSheets if available