#138 bug when adding block/mod with left column block width > 2

[jgraham]

When adding a block or module to a page:

If there is a block/mod in the left column with width
2, that is positioned in a row after the last item in
the center column, then adding a block/mod will break
the page.

Error message will be along the lines of the following,
where row 1 and pageid 3 will be different:
Bug in block moving/editing code: too many columns for
row: 1, pageid: 3

This bug will not happen on pages with items of width 1.

[Michael Penney]

Logged In: YES
user_id=852849
Originator: NO

Go ahead and push this fix to vers 2.0.