fresh install of debian package uses flyway

Closes #389

See merge request !368

email sender is lazy initialized (because postconstruct is called before population of the database)

Resolve "color of highlighted element"

See merge request !367

broken chebi annotator doesn't stop data uploading

See merge request !366

Resolve "creating user's overlay TYPE = PROTEIN is not working"

See merge request !365

Resolve "Error on setting the zoom level of the submap"

See merge request !364

Resolve "memory limit on docker instance"

See merge request !363

Resolve "getting list of reactions by element id doesn't work for big set"

See merge request !362

Resolve "the name of commented protein is remembered in a new comment"

See merge request !361

Resolve "Overlay download (v12)"

See merge request !360

Resolve "use database migration framework"

Closes #389

See merge request !359