Added insert vertex function and added vertex icons.

Added triangle, quad and condline to the add object dialog

Begin work on dialogs for adding objects. Comments functional!

Implemented insertion of triangles, quads, condlines and comments

er, I said don't limit the amount of decimals

ftoa: don't limit the amount of decimals

Temporarily set the locale to C when using ftoa, or the resulting string is subject to the locale and gets unexpected symbols (e.g. commas for the decimal dots while the function expects periods)

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mercurial