Add options to HMRC report to summarise by contact and sort by sort_name

See merge request !28

Changes

See merge request !29

Multiple updates, API4 conversion, standardise lowercase for custom fields, use shared function to get addresses from gift aid declaration

See merge request !27

Multiple updates, API4 conversion, standardise lowercase for custom fields, use shared function to get addresses from gift aid declaration

Fixjob

See merge request !24

Fix exporting when batchID filter is specified via URL

See merge request !23

Fix totals on GiftAid report

Closes #17

See merge request !22

Fix #25: consider addresses from declarations in the next 4 years

Closes #25

See merge request !20

Don't add contributions with a future "receive date" to batch. HMRC does not allow this!

See merge request !21

Fix getting eligible financial types setting

See merge request !19