The re-enables the UI, uses Qt API for importing and
stores the certificate/key in the system keychain.
People who had set up client certs need to re-setup the account. This is ok
since it was an undocumented feature anyway.
* removed broken QSsl::SslV3 default
* rewrote slotHandleErrors(): no longer claim errors which are none.
* hack reverted: lib64 was not the cause for NixOS issues related to libraries.
* refactored csync/src/csync_owncloud.c and discovered+fixed why the dav_connect was never getting the certPath+certPassoword
* cleanup of code but seems this crushed the ssl client certificate support
* fixes the https://github.com/owncloud/client/issues/69#issuecomment-69358377 issue
* lots of cleanup
* From TODO list : translate all french comments into english
* changed _pemCertificate type from QString to QByteArray
