update for obsidian 0.9.0 beta

• nested transclusions : rendered as inline text, without indentation (almost smealessly integrated to the text)
• graph view colors updated for 0.9.0 (tags; attachments: arrows) + smore emphasis on edges
• graph view options menu : smaller and more compact
• updated checkboxes for 0.9.0
• linked panes icon is now red for better visibility
• better alignment of workspace elements
• styling for menus checkboxes and modals
• better support for transluscency