warn the user if they have already shared a document with and individual
assume an investor can have multiple copies of a document, and don't pull docs into doc viewer by email
Merge branch 'mass_prepare'

Closes #398
when warning about previously shared docs, only use the most recent info
change the "doc already shared" warning to be a message below the email, and adjust the document preparation layout into a table to accomodate

closes #385
WIP: need to adjust input boxes to fill cell
better looking table for doc preparation
Merge branch 'master' into mass_prepare
add a share button to the doc viewer, when applicable. Closes #402
correction
Merge branch 'julia'
add the annotation tutorial to the annotation sidebar if there are no annotations. Closes #386
Merge branch 'mass_prepare'
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.
separate out the types of donut graph