Sign PDF document on the client side

Sign PDF document on the client side - its JavaScript implementation

Note: As later on we have to develop the same for C++ library.

added DevInProgress label and removed ReadyForDev label

created branch 32-sign-pdf-document-on-the-client-side

mentioned in merge request !38 (merged)

changed milestone to %v0.11

@alexey.lunin @igor.markin @sasha.ilieva Please review

@igor.markin promised he will spend his wedding night fixing the eslint related problems in this implementation.

@Matanski documentation

added needs review label

changed milestone to %v0.12

changed milestone to %v0.13

changed milestone to %v0.14

closed via merge request !38 (merged)