Update Controls.GroupBox.xaml

Using dark themes makes text in header as black which is difficult to see. Hard coded much like TitleForeground for MetroWindow.
Not forced to a minimal state anymorr
Update Controls.CheckBox.xaml
punker76 fix for groupbox-header
punker76 update for header

• added BackgroundToForegroundConverter
Fixed MetroDemo.NET45 failure to compile due to missing CleanWindowDemo.xaml (and .xaml.css).
Cleanup
fix search textbox

this fix the style and function of the search textbox
Merge pull request #638 from MahApps/jkarger-fix-search-textbox

fixed search textbox
add ButtonCommand to TextboxHelper
fire button click event only once

and reduce code redundancy
ChromelessButtonTemplate (control template)
two more propertiers

add content and template properties for the textbox button
show textbox/password content at example
Merge pull request #637 from spiritdead/patch-2

Update Controls.CheckBox.xaml
Merge pull request #639 from MahApps/jkarger-textbox-button-behaviour

textbox button command behaviour
updated TitleForeground to use converter
Changed StaticResource to DynamicResource for RadioButton

My application kept crashing because RadioButton was using a Static instead of a DynamicResource, I think where it can be Dynamic it should be Dynamic.
Ahm yeah...github and stuff
Revert "Ahm yeah...github and stuff"

This reverts commit 7c0c3af7a8c4d993917af2ec2cbf035473baa2cf.