Cache update should be done after database writing and not before, if we want to take profit of the cache.
Use cache to find out if we should write a new "flagged"/starred status into database.

Should speed up Google Reader refreshes.
Fix opening articles pages (sequel of issue #117)
Hack our formatters to handle timezone indicators containing a colon, like +08:00 and -05:00

Should fix <http://forums.cocoaforge.com/viewtopic.php?t=25749&p=135854#p135854> 
Anyway, [XMLParser +parseXMLDate] is relatively flexible with not overly exotic cases.
On Snow Leopard, ArticleListView's cells looked too tiny.
Improve on the previous commit : this seems more eye pleasing, from my point of view.
Could not select Google Reader feeds when creating/editing a smart folder.
Wider protection of article currently being read.

See @marchyman comment in issue #129 : <https://github.com/ViennaRSS/vienna-rss/issues/129#issuecomment-11984709>
Be tolerant with feed elements which contain XML/XHTML while they shouldn't : example reported by "two bottles" at <http://forums.cocoaforge.com/viewtopic.php?t=25590&p=135595>

Note : we should revisit all this code more in depth, as it uses many methods which are declared deprecated starting from OS X v10.8
Merge pull request #127 from barijaona/database

Database
Merge pull request #128 from barijaona/bugfixes

Fix opening articles pages (sequel of issue #117)
Merge pull request #133 from barijaona/XMLparsing

Be tolerant with feed elements which contain XML/XHTML while they shouldn't
Merge pull request #131 from barijaona/refreshes-no-annoyance

Wider protection of article currently being read.
Fixes to German translation

Thanks to Cocoaforge user fxr for spotting this and his for contribution <http://forums.cocoaforge.com/viewtopic.php?t=25091&p=135924#p135924>
The committer (whose German notions are quite rusty) hopes that he hasn't broken anything...
Silent a warning
Solves a small annoyance introduced by commit 6a478a6dcf7adf075cc06a210afe5ccddbe42626

The directory ${DERIVED_FILE_DIR} is not created in many configurations, so we pick up another directory for storing a file.
Version notes