Fix the feed credentials input dialog not showing
Fix icon not appearing in credentials input dialog

The correct icns is now named vienna-3
Fix username/password issues.

Reverse commit 56f3aae90f and fix detection of feeds using username/password.
See http://forums.cocoaforge.com/viewtopic.php?t=26440&p=137699#p137699 and http://forums.cocoaforge.com/viewtopic.php?f=18&t=25229&p=135848#p135168
Merge pull request #256 from barijaona/bugfixes

Password related bugfixes
Accessibility labels for the feeds and articles tables

I named the feeds table “Feeds” but if Vienna uses other term for them
(e.g. Folders, I am not sure as I don’t use Vienna myself), please adjust it
or tell me to do so.
Improve accessibility of feed list items

This is a bit of a hack as we are using AXDescription for this. Overriding
AXValue is not viable without much more code because all dependent parameterized
attributes (AXAttributedStringForRange etc.) would need to be adjusted as well.

Cleaner solution can IMHO be implemented only after transitioning to a
view-based outline and have each element (error image, progress image, count
label, feed name, folder image) available as a subview of the cell’s view and
provide its own part of accessibility information. (E.g. as in Mail's mesage
list). For now, this quite works :-)
Accessibility label for the “Filter by:” pop-up
Change accessibility label from “Feeds” to “Folders”

Per @barijaona’s feedback
Use different equivalent already localized string
Merge pull request #259 from dusek/accessibility-labels

Improve accessibility of feed list and article list. Thanks to @dusek !
Enable caching in UnifiedDisplayView
Changes in UnifiedDisplayView

- simplified start of Webview handling
- add article's row management in ArticleCellView
- change the way we detect a non relevant cell (check our article's folder Id and row)
- fix Webview error handling
- fix an exception
Small changes to try to limit flickering in UnifiedDisplayView

- remove all setNeedsDisplay tricks : MacOS X probably knows better than me
- standardize initial size of cells
"Clean" and standardize cells before their reuse by UnifiedDisplayView
Optimized UnifiedDisplayView

- adjust management of ArticleCellView's inProgress property
- store and use as soon as possible the pieces of information used to detect non relevant cells
- remove strange tricks in -listView:cellForRow
- no wait time when dimension problem is detected
Precaution against UnifiedDisplayView flickering

Finer management of rowHeightArray, when a bottom cell get finished before upper cells.

Conflicts:
	src/UnifiedDisplayView.m
Changed UnifiedDisplayView error handling

webView:didFailLoadWithError:forFrame: and non relevant cell
Implement PXListViewCell's layoutSubviews method

This seems to solve efficiently the "shifted cell" problem.
So we remove many unneeded tricks.
Merge pull request #261 from barijaona/UnifiedDisplayViewFix

UnifiedDisplayView improvement : smoother scrolling, less mispositioned cells.