remove auth duplication

app/controllers/projects/base_tree_controller.rb

 class Projects::BaseTreeController < Projects::ApplicationController
   include ExtractsPath
 
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 end

app/controllers/projects/blame_controller.rb

@@ -3,7 +3,6 @@ class Projects::BlameController < Projects::ApplicationController
   include ExtractsPath
 
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/blob_controller.rb

@@ -3,7 +3,6 @@ class Projects::BlobController < Projects::ApplicationController
   include ExtractsPath
 
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
   before_filter :authorize_push_code!, only: [:destroy]

app/controllers/projects/branches_controller.rb

 class Projects::BranchesController < Projects::ApplicationController
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :require_non_empty_project
 
   before_filter :authorize_download_code!

app/controllers/projects/commit_controller.rb

@@ -3,7 +3,6 @@
 # Not to be confused with CommitsController, plural.
 class Projects::CommitController < Projects::ApplicationController
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
   before_filter :commit

app/controllers/projects/commits_controller.rb

@@ -4,7 +4,6 @@ class Projects::CommitsController < Projects::ApplicationController
   include ExtractsPath
 
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/compare_controller.rb

 class Projects::CompareController < Projects::ApplicationController
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/graphs_controller.rb

 class Projects::GraphsController < Projects::ApplicationController
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/network_controller.rb

@@ -3,7 +3,6 @@ class Projects::NetworkController < Projects::ApplicationController
   include ApplicationHelper
 
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/raw_controller.rb

@@ -3,7 +3,6 @@ class Projects::RawController < Projects::ApplicationController
   include ExtractsPath
 
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/refs_controller.rb

@@ -2,7 +2,6 @@ class Projects::RefsController < Projects::ApplicationController
   include ExtractsPath
 
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/repositories_controller.rb

 class Projects::RepositoriesController < Projects::ApplicationController
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :authorize_download_code!
   before_filter :require_non_empty_project
 

app/controllers/projects/tags_controller.rb

 class Projects::TagsController < Projects::ApplicationController
   # Authorize
-  before_filter :authorize_read_project!
   before_filter :require_non_empty_project
-
   before_filter :authorize_download_code!
   before_filter :authorize_push_code!, only: [:create]
   before_filter :authorize_admin_project!, only: [:destroy]

app/controllers/projects_controller.rb

@@ -4,7 +4,6 @@ class ProjectsController < ApplicationController
   before_filter :repository, except: [:new, :create]
 
   # Authorize
-  before_filter :authorize_read_project!, except: [:index, :new, :create]
   before_filter :authorize_admin_project!, only: [:edit, :update, :destroy, :transfer, :archive, :unarchive, :retry_import]
 
   layout 'navless', only: [:new, :create, :fork]