Reversions and fixes to changes since 2.3.0.
Subdbs may not contain RIs, so we don't need /netdb tabs for them.
Partially fixes Gitlab #465.

- Remove subdb RI tabs on /netdb
- HTML fixes on subdb LS tab
- Skip subdb LS tab if no clients
- We don't need both Hash and boolean args on renderLeaseSetHTML(), just use hash != null
- Rename/cleanup/restore tagged strings, don't tag strings only visible in advanced config

NetDB: Fix lifecycle issues for subsessions (Gitlab #460, #406)

Closes #460

See merge request !139

i2ptunnel: Fix gzip footer check in GunzipOutputStream (Gitlab #458)

Closes #458

See merge request !134

i2ptunnel: Remove nonstandard Proxy-Connection header (Gitlab #452)

Closes #452

See merge request !130

I2p.i2p 2.4.0 eliminate use sub dbs option -  Do not merge until after multihomeDb is merged

Closes #461

See merge request !138

I2p.i2p 2.4.0 eliminate multihomedb

Closes #409

See merge request !137

NetDB: SubDB lifecycle fixes (Gitlab #406)

Closes #406

See merge request !135

re: LHMCache iteration order

NPEs due to null log manager

NPEs via junit; must be run via main()
Already disabled on ant side

Router: Reverse API change from banlistRouterHard back to BanlistRouterForever

See merge request !131

Router: Remove all refs to ban-by-lookup-flood code. Don't create throttlers in the FNDF unles sit's the main db

Switch back to a single blind cache

See merge request !127

i2ptunnel: HTTPResponseOutputStream cleanup

See merge request !122