support utf8 in mustache partial template

[mohammed-addurrah]

hello,there is a problem when mustache template page call other page using {{>partialpage}} that does not support utf8 and give the text that is not engish wrong format so I modified your code to solve this problem and these is the code wrong

in MVCFramework.View.Renderers.Mustache in function LoadPartials these is the wrong code
fPartials.Add(lPartialName, TFile.ReadAllText(lPartialFileNames[i])
the right code is
fPartials.Add(lPartialName, TFile.ReadAllText(lPartialFileNames[i],TEncoding.UTF8)
I dont know to to modif code in github but I hoop some one fix it