[Ide] Open File dialog error when selecting text encoding
Problem was that some code used "MonoDevelop.Ide.SelectEncodingsDialog.ConversionEncodings" and some "MonoDevelop.Projects.Text.ConversionEncodings" property... So I removed "MonoDevelop.Ide.SelectEncodingsDialog.ConversionEncodings"
Merge pull request #634 from DavidKarlas/bug21992

[Ide] Bug21992 - Open File dialog error when selecting text encoding