Don't fetch credidentials from application.cpp

They will be fetched by the connection validator after doing
the status.php check
Try to handle auth requests by a Shibboleth IdP
Remove spurious error message.

Sometimes 'success' is false without apparent reason.
Just remove the message
Mask password lineedit
Shibboleth: Move browser window to the offset of the setup wizard
mac os sign script: quote all params
OS X: Make script more even robust
Do not erase the full account config if an old version of the client stored the password
Do not erase the username and password from the config if we never connected

If we never fetched the credidentials, the _user and _password will be empty,
we should therefore not try to save them because it would just erase them.

Version 1.5.2 always try to fetch the creds at startup.  But now we only
do it if we detect an internet connection
Fix layout of the network tab

Fixes #1491
Do proper initialization of _fetchJobInProgress.

That confused win32, since this flag was true very often.
Use the mirall config file for all Keychain jobs.

Also set the job as parent to get proper deletion of the
settings object.
Add method clearCookieJar which wipes QNAMs cookies.
Remove a superflous MessageBox. User is asked for Password instead.
Make the CheckServerJob ignoring credential fails.
Do not wipe the credentials from config for reconnect.

This should fix bug #1491
Keep the rentrency flag when asking the user for the password
Revert "Do not wipe the credentials from config for reconnect."

This reverts commit 9eb3452a71cc98200022275101b728e910371897.

We need that or wrong password can never be changed
Only removes the password from the credidentials if it has been fetched before

Also only run the propfind job if the credidentials are readon, and fetch them
otherwise
Remove left over member variables.