Updates

Updates:
1. Added column names and rownames into index, remote loading data.
2. Added the mini map...no click & go functions yet
3. Mousewheel in/out

Weird ext bugs:
1. mousewheel event can't be removed! annoying.
2. same function if registered twice will be performed twice. Trying to sort this out.
3. Weird behavior of selection models. I will get back to this when i have more time.