Small updates/fixes to project asset manager
Removed setDialogHeight function from authoring tool, replaced with adjustDialogHeight function in view_utils.js (automatically adjust to fit jQuery dialogs that are taller than document height)

- Added title option to insertTooltips util function and edited acceptable values for tooltip max width option
Began to implement new project structure editing layout and functionality; redesigned project metadata editor and displays

- Removed step numbering by activity or project option (wasn't functional; numbering by project almost never used))
- Lots of visual/style updates
- Updated tooltip and i18n html elements to use data-* attributes