Improvement for EditableFileUploadAttribute

Added an additional value UploadDirectory. If set, the specified upload
directory is used instead the auto generated.
EditableFileUpload WhiteSpace Problem
EditableFileUpload WhiteSpace Problem
WhiteSpace Problem
Merge pull request #181 from andy4711/master

Improvement for EditableFileUploadAttribute
EditableFileUpload whitespace fix
Modified iconhandler to work when no handler was mapped (a.k.a. my machine
Server-side implementation of slug generation and validation
Merge pull request #189 from DejanMilicic/master

Reimplementation of slug generation
Normalize whitespace and improve a few comments.
Update assembly version to 2.5.0.8
Add MenuPart
Merge branch 'master' of github.com:n2cms/n2cms
Add MenuPart to N2.Extensions.csproj