Modernized progress window GUI

Following the refactoring that has been initiated in pdfmasher's
"vala" branch, I pushed more progress window logic into the
core.

The UI code is now a bit dumber than it used to be, and the core
now directly decides when the progress window is shown and
hidden. The "job finished" notification is also directly sent by the
core. Job description update logic is handled by a core gui
textfield.

Job description contsants also moved to the core, triggering
a localisation migration from "ui" to "core".

cocoa/base/AppDelegateBase.h

@@ -15,6 +15,7 @@ http://www.hardcoded.net/licenses/bsd_license
 #import "IgnoreListDialog.h"
 #import "HSFairwareAboutBox.h"
 #import "HSRecentFiles.h"
+#import "HSProgressWindow.h"
 
 @interface AppDelegateBase : NSObject
 {
@@ -27,6 +28,7 @@ http://www.hardcoded.net/licenses/bsd_license
     DirectoryPanel *_directoryPanel;
     DetailsPanel *_detailsPanel;
     IgnoreListDialog *_ignoreListDialog;
+    HSProgressWindow *_progressWindow;
     NSWindowController *_preferencesPanel;
     HSFairwareAboutBox *_aboutBox;
     HSRecentFiles *_recentResults;

cocoa/base/AppDelegateBase.m

@@ -74,6 +74,8 @@ http://www.hardcoded.net/licenses/bsd_license
     _directoryPanel = [self createDirectoryPanel];
     _detailsPanel = [self createDetailsPanel];
     _ignoreListDialog = [[IgnoreListDialog alloc] initWithPyRef:[model ignoreListDialog]];
+    _progressWindow = [[HSProgressWindow alloc] initWithPyRef:[[self model] progressWindow] view:nil];
+    [_progressWindow setParentWindow:[_resultWindow window]];
     _aboutBox = nil; // Lazily loaded
     _preferencesPanel = nil; // Lazily loaded
     [[[self directoryPanel] window] makeKeyAndOrderFront:self];
@@ -197,7 +199,6 @@ http://www.hardcoded.net/licenses/bsd_license
 /* Delegate */
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification
 {
-    [[ProgressController mainProgressController] setWorker:model];
     [model initialRegistrationSetup];
     [model loadSession];
 }

cocoa/base/ResultWindowBase.m

@@ -42,9 +42,6 @@ http://www.hardcoded.net/licenses/bsd_license
     [matches setTarget:self];
     [matches setDoubleAction:@selector(openClicked)];
     [self adjustUIToLocalization];
-    
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(jobStarted:) name:JobStarted object:nil];
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(jobInProgress:) name:JobInProgress object:nil];
     return self;
 }
 
@@ -340,22 +337,6 @@ http://www.hardcoded.net/licenses/bsd_license
     previewPanel = nil;
 }
 
-- (void)jobInProgress:(NSNotification *)aNotification
-{
-    [Dialogs showMessage:NSLocalizedString(@"A previous action is still hanging in there. You can't start a new one yet. Wait a few seconds, then try again.", @"")];
-}
-
-- (void)jobStarted:(NSNotification *)aNotification
-{
-    [[self window] makeKeyAndOrderFront:nil];
-    NSDictionary *ui = [aNotification userInfo];
-    NSString *desc = [ui valueForKey:@"desc"];
-    [[ProgressController mainProgressController] setJobDesc:desc];
-    NSString *jobid = [ui valueForKey:@"jobid"];
-    [[ProgressController mainProgressController] setJobId:jobid];
-    [[ProgressController mainProgressController] showSheetForParent:[self window]];
-}
-
 - (BOOL)validateToolbarItem:(NSToolbarItem *)theItem
 {
     return ![[ProgressController mainProgressController] isShown];