clean up annotation tutorial styling
highlight fields with bad values in red on bulk preparation stage
fix styling on prepare screen and a bug where only 1 document would get correct transaction attributes
migrate some docViewer calls from annot.filled to annot.isInvalid
add a flag icon for required fields on the prepare screen
fix placeholder text coloring for browsers other than Firefox and the select2
add a warning icon to personal preparation lines if there exists invalid data. Fix annotation isEmpty check for image signatures.
prevent having both good and bad status icons for document preparation rows
disable "Share Documents" button if a field is invalid
Merge branch 'master' into mass_prepare
highlight next step if document is marked up incorrectly for a transaction
Merge branch 'mass_prepare'