Make project's Git repository a window global

This allows it to operate independently of the
project and mirror the availability of the root view
and project.

src/packages/fuzzy-finder/lib/fuzzy-finder-view.coffee

@@ -40,12 +40,11 @@ class FuzzyFinderView extends SelectList
     $$ ->
       @li =>
         typeClass = null
-        repo = project.repo
-        if repo?
-          status = project.repo?.statuses[project.resolve(path)]
-          if repo.isStatusNew(status)
+        if git?
+          status = git.statuses[project.resolve(path)]
+          if git.isStatusNew(status)
             typeClass = 'new'
-          else if repo.isStatusModified(status)
+          else if git.isStatusModified(status)
             typeClass = 'modified'
 
         unless typeClass

src/packages/fuzzy-finder/spec/fuzzy-finder-spec.coffee

@@ -443,7 +443,7 @@ describe 'FuzzyFinder', ->
       it "displays the modified icon", ->
         editor.setText('modified')
         editor.save()
-        project.repo?.getPathStatus(editor.getPath())
+        git.getPathStatus(editor.getPath())
 
         rootView.trigger 'fuzzy-finder:toggle-buffer-finder'
         expect(finderView.find('.file.modified').length).toBe 1
@@ -453,7 +453,7 @@ describe 'FuzzyFinder', ->
     describe "when a new file is shown in the list", ->
       it "displays the new icon", ->
         rootView.open('newsample.js')
-        project.repo?.getPathStatus(editor.getPath())
+        git.getPathStatus(editor.getPath())
 
         rootView.trigger 'fuzzy-finder:toggle-buffer-finder'
         expect(finderView.find('.file.new').length).toBe 1

src/packages/status-bar/lib/status-bar-view.coffee

@@ -68,7 +68,7 @@ class StatusBarView extends View
     @branchArea.hide()
     return unless path
 
-    head = @buffer.getRepo()?.getShortHead() or ''
+    head = git?.getShortHead() or ''
     @branchLabel.text(head)
     @branchArea.show() if head
 
@@ -78,8 +78,7 @@ class StatusBarView extends View
     return unless path
 
     @gitStatusIcon.addClass('git-status octicons')
-    git = @buffer.getRepo()
-    return unless git
+    return unless git?
 
     status = git.getPathStatus(path)
     if git.isStatusModified(status)

src/packages/tree-view/lib/directory-view.coffee

@@ -22,22 +22,21 @@ class DirectoryView extends View
     @expand() if isExpanded
     @disclosureArrow.on 'click', => @toggleExpansion()
 
-    repo = @project.repo
     iconClass = 'directory-icon'
-    if repo?
+    if git?
       path = @directory.getPath()
       if parent
-        @directoryName.addClass('ignored') if repo.isPathIgnored(path)
-        iconClass = 'submodule-icon' if repo.isSubmodule(path)
+        @directoryName.addClass('ignored') if git.isPathIgnored(path)
+        iconClass = 'submodule-icon' if git.isSubmodule(path)
       else
-        iconClass = 'repository-icon' if path is repo.getWorkingDirectory()
+        iconClass = 'repository-icon' if path is git.getWorkingDirectory()
     @directoryName.addClass(iconClass)
 
   getPath: ->
     @directory.path
 
   isPathIgnored: (path) ->
-    config.get("core.hideGitIgnoredFiles") and @project.repo?.isPathIgnored(path)
+    config.get("core.hideGitIgnoredFiles") and git?.isPathIgnored(path)
 
   buildEntries: ->
     @unwatchDescendantEntries()

src/packages/tree-view/lib/file-view.coffee

@@ -34,17 +34,16 @@ class FileView extends View
 
   updateStatus: ->
     @removeClass('ignored modified new')
-    repo = @project.repo
-    return unless repo?
+    return unless git?
 
     path = @getPath()
-    if repo.isPathIgnored(path)
+    if git.isPathIgnored(path)
       @addClass('ignored')
     else
-      status = repo.getPathStatus(path)
-      if repo.isStatusModified(status)
+      status = git.getPathStatus(path)
+      if git.isStatusModified(status)
         @addClass('modified')
-      else if repo.isStatusNew(status)
+      else if git.isStatusNew(status)
         @addClass('new')
 
   getPath: ->