This fixes (mostly) vertical cursor movement in IE

Replaced "for" and "while" in indent tokens with "do".  This is not only simpler, but allows for correct indentation when "do ... end" blocks are used (these are valid; see the complete syntax of Lua: http://www.lua.org/manual/5.1/manual.html#8 ).

Closes #214

The callback in runmode currently returns for every token
only the text and the style. This commit adds the position,
the line and the character, to the callback. It's an object
with "line" and "ch" as properties.

A previous patch had changed the interface to markText, but not updated matchBrackets

Apparently, you can't set an invalid (by HTML3 standards) innerHTML in IE, so adding
<div>x</div> to a P element raises this very descriptive 'Unknown runtime error'.

Issue #215

It now moves, splits across lines, and merges properly.

This might reduce the problems with IME on Firefox a bit

Issue #212

Closes #211

Signed-off-by: Jan Keromnes <janx@linux.com>

Closes #207

Closes #206

Also, dropped text is now selected after drop.

Closes #196

(It was just unfocusing the editor before, due to the drag implementation.)

Closes #195