Fixes #1457 - proper positioning of validation errors on the edit/verify package metadata pages (except for textarea - todo) - and tidying up the CSS slightly.
Trying to place the error message more beautifully for multiline textarea
Make field validation areas for text areas appear on the next line.
Merge branch 'tilovell/1457-BetterValidationErrorPositioning' into qa

Conflicts:
	src/NuGetGallery/Views/Packages/Edit.cshtml