Add links to download one or all attachments

Also removed the contextual menu over file attachments and changed the
label color when moving over the file attachments.

UI/MailerUI/UIxMailView.m

@@ -47,11 +47,12 @@
 #import <SOGo/SOGoUser.h>
 #import <SOGo/SOGoUserDefaults.h>
 #import <SOGo/SOGoUserManager.h>
+#import <SOGoUI/UIxComponent.h>
 #import <Mailer/SOGoMailObject.h>
 #import <Mailer/SOGoMailAccount.h>
 #import <Mailer/SOGoMailFolder.h>
-#import <SOGoUI/UIxComponent.h>
 #import <MailPartViewers/UIxMailRenderingContext.h> // cyclic
+#import <MailPartViewers/UIxMailSizeFormatter.h>
 
 #import "WOContext+UIxMailer.h"
 
@@ -60,6 +61,8 @@
   id currentAddress;
   NSString *shouldAskReceipt;
   NSString *matchingIdentityEMail;
+  NSDictionary *attachment;
+  NSArray *attachmentAttrs;
 }
 
 @end
@@ -80,6 +83,8 @@ static NSString *mailETag = nil;
 - (void) dealloc
 {
   [matchingIdentityEMail release];
+  [attachment release];
+  [attachmentAttrs release];
   [super dealloc];
 }
 
@@ -111,6 +116,16 @@ static NSString *mailETag = nil;
                    [self messageSubject]];
 }
 
+- (void) setAttachment: (NSDictionary *) newAttachment
+{
+  ASSIGN (attachment, newAttachment);
+}
+
+- (NSDictionary *) attachment
+{
+  return attachment;
+}
+
 /* links (DUP to UIxMailPartViewer!) */
 
 - (NSString *) linkToEnvelopeAddress: (NGImap4EnvelopeAddress *) _address
@@ -146,6 +161,36 @@ static NSString *mailETag = nil;
   return [[[self clientObject] replyToEnvelopeAddresses] count] > 0 ? YES : NO;
 }
 
+/* attachment helper */
+
+- (NSArray *) attachmentAttrs
+{
+  if (!attachmentAttrs)
+  {
+    ASSIGN (attachmentAttrs, [[self clientObject] fetchFileAttachmentKeys]);
+  }
+
+  return attachmentAttrs;
+}
+
+- (BOOL) hasAttachments
+{
+  return [[self attachmentAttrs] count] > 0 ? YES : NO;
+}
+
+- (NSFormatter *) sizeFormatter
+{
+  return [UIxMailSizeFormatter sharedMailSizeFormatter];
+}
+
+- (NSString *) attachmentsText
+{
+  if ([[self attachmentAttrs] count] > 1)
+    return [self labelForKey: @"files"];
+  else
+    return [self labelForKey: @"file"];
+}
+
 /* viewers */
 
 - (id) contentViewerComponent