CustomWizard: Tweak replaceFields, replace %% with %

Otherwise there's no way to have a '%' in a file after replacement.

Task-number: QTCREATORBUG-9793

Change-Id: I3c9bfac9f3bd8a19bbc293839d9d69ccf951e264
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Qt4Project: Ignore autosave files

Don't show them in the project tree and don't tell the codemodel that it
needs to update itself. Not the cleanest code.

Task-number: QTCREATORBUG-9957
Change-Id: I37fc1e2d401f59365ffbbb53617eeb7b86eb6456
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
GenericProjectManager: Add *.autosave to the default ignored files

Those are our own autosave files.

Change-Id: Iefbca9d9eaa201a4650b157272c0b7d6ac875ac0
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>