fixed typo in table name, partially fixes #228
Merge pull request #234 from kevinpapst/fixes/mysql

fixed typo in table name, partially fixes #228
Fixed date validation in db_restore. (closes #236)
Merge pull request #238 from ServiusHack/issue/236

Fixed date validation in db_restore. (closes #236)
Fixed failed update in MySQL strict mode.

The strict mode prevents NULL columns to be changed into another default
value. To solve this all columns having NULL be updated to the new
default value prior to changing the table structure. (closes #243)
Merge pull request #244 from ServiusHack/issue/243

Fixed failed update in MySQL strict mode.