fix: fix the version cause new pdf-dist version does not work

fix: fix the version cause new pdf-dist version does not work

fix: hard-code changed endtime, that graphql is mis-communicating

this is due to a mistake in the election entity logic, that only
considers the ElectionCreated events but not the ElectionUpdated
events, hence the lost update

imp: refine error message when tx was cancelled

fix: fix disappeared/-ing "check boxes" when returning to ballot page

resolves #11

feat: make text changes and add space below ballot headline and speci…

…fic message for election 15 #7

PR: #10

fix: fix invalid dates from crashing the whole app

imp: change wordings (L336)

L336

use file-saver library for filename for browsers that write "blob:" (…

…L331)

L331

add missing import for LoadBallot Notification

feat: keep key and ballot when no jwt is provided L328 (L329)

L329