Reactivating BP 1.2 SQL errors [has-patch]

[rvenable]

When you deactivate and reactivate BP 1.2-rc2, you can get SQL errors.

One error is trying to alter the activity table column component_action to type. It gave me an error because my table had already been altered. I attached a diff that checks to see if the column exists before trying to rename it.

Another error is in trying to insert default data into some xprofile tables. The patch I attached first checks to see if there is already data there, so that it won't have to call a failing INSERT statement.

[apeatling]

(In [2668]) Fixes #1884

[apeatling]

Thanks for the patch.