Now it is possible to show a CapsLock warning in a PasswordBox
Add PasswordBoxHelper to MahApps.Metro.csproj
Removal of unused using directives
Removal of blank lines
Added the Floating Watermark feature
Some editions to the floating watermak

Changed the whole storyboards.
Moved the storyboards to Shared.xaml, to share them in both TextBox.xaml
and PasswordBox.xaml.
Edited TextBoxes with buttons too
Merge pull request #1 from mrahhal/mrahhal-floating-watermark

Some editions to the floating watermak
Added FloatingWatermark in MetroDemo
Add missing Style to MetroPasswordBox
Floating watermark font size in Fonts.xaml
Removed ShowCapslockWarning-DP, instead introduced CapsLockIcon-DP. This DP takes now an object that allows the developer to show any element he wants as warning icon for enabled CapsLock.

CapsLockWarningText is now of type object in order to have the same behaviour as in CapsLockIcon-DP
Adaption of xaml
Refactoring of DP for better understanding.
Oops. Forgot to revert the - to ! as default CapsLockIcon
If the mouse is over a TabItem and this TabItem is currently selected, then the color is not GrayhoverBrush, but HighlightBrush
ControlsHelper.HeaderFontSize is set to Inherited=true in order to allow to set the HeaderFontSize at TabControl level

<TabControl ControlsHelper.HeaderFontSize="20">
....
Revert "special property" behavior
Revert space missmatch
ControlsValidationBrush is now the Foreground for "!" in PasswordBox
If isEditable is enabled Background is not properly set