fixed issue 1902:SQLFORM.grid showbuttontext argument links doesn't have class button, thanks Francisco
Merge branch 'master' of github.com:web2py/web2py
Merge branch 'master' of github.com:web2py/web2py
Merge branch 'master' of github.com:web2py/web2py
Merge branch 'master' of github.com:web2py/web2py
fix rewrite tests under Windows
mssql4 adapter enhancements

Given that mssql4 requires MSSQL2012, we can use newer types for data
without worrying about compatibility with older MSSQL versions
prevent open redirects, thanks Steve Rawlinson
prevent_password_reset_attacks, thanks Steve Rawlinson
Merge pull request #455 from niphlod/fix/test_rewrite

fix rewrite tests under Windows
Merge pull request #456 from niphlod/enhancement/mssql4

mssql4 adapter enhancements
restored .travis.yml