Delphi Entity Menus

Changes

• Add FlexBox support
• Move layout engine to its own module
• Refactor layout engine
• Added vertical-align CSS property.
• Added flex-grow CSS property
• Added flex-shrink CSS property.
• Added gap CSS property.
• Added row-gap and column-gap CSS properties.
• Added align-self CSS property
• When performing math operations with px units, convert them to world units before calculation.
• Fix wrong input type used when checking if input should be validated as number.
• Added bStats metrics support
• Fixed a tooltip graphical issue
• Properly update depth and things when calling setTitleNode()