Bullet lists not really managable

[Christian Weiske]

Currently tomdroid does not allow one to use bullet lists. You can add a bullet point by typing *, then space, then a letter.

- When beginning lines with a "-", tomdroid should automatically create a bullet list
- There should be a bullet list icon in the toolbar
- Pressing return on a bullet list line should make the next line also a bullet list
- Pressing 2x return should switch off bullet list
- There needs to be a way to indent the current bullet list to the next level, and tab it back to the previous level