Fix pre-release NuGet packages always being installed.

Pre-release NuGet packages can now only be installed with the Package Management
console when the -IncludePrerelease argument is specified.
Merge branch 'master' of github.com:miseeger/SharpDevelop
Better warning message for obsolete implicit conversion operator
add missing files
update string resources
Fix Init vs. Load in project option panel user controls
Add XmlDoc for SearchOptionsChangedEventArgs
Fix 'Add existing project'

Commit 401e6b90 fixed a typo in the command name, but didn't change the .addin file.
Add "AnyCPU (32-bit preferred)" option.

This option is only available if .NET 4.5 is installed.
Create new projects as Any CPU (32-bit) if the .NET 4.5 framework is installed.

Any CPU (32-bit) also works with older target frameworks as those interpret the 32-bit preferred flag as 32-bit required; but we require the new compiler version.
Fix typo
Fix NuGet package dependencies not displaying.

Add WPF data template for PackageDependencySet.
Show last published date for NuGet packages.

Show the package's last published date in the Manage Packages dialog instead of the
last updated date.
prepare goto class to support CamelHumps
implement CamelHumpsAutoComplete

move code to extention method
add tests
add support for open files with CamelHumps
Fix FormatException in Class Diagram addin.

Visual Studio class diagrams do not store the Collapsed xml attribute when the item is not collapsed.
Fixed SearchAndReplaceBinding.Detach
Allow enter key when editing standard file headers.
Fix blank package summary in Manage Packages dialog packages list.

Display NuGet package description if the summary is missing.