Rework server

[dkfellows]

Moves the complicated use of poll() to a specialist class, getting the rest of the server code to be simpler and more focused on the higher-level business of actually being a server.

[coveralls]

Coverage decreased (-0.1%) to 99.301% when pulling c6b612584acd79f6c4fbd6822abad54f4a38b6f6 on rework-server into 7fe1217b07f17de1751fe817a6f5a91330490402 on master.

[coveralls]

Coverage decreased (-0.1%) to 99.301% when pulling ecf3b56d2b92d488c9334bb700c1cec24636c49f on rework-server into 7fe1217b07f17de1751fe817a6f5a91330490402 on master.

[coveralls]

Coverage decreased (-0.1%) to 99.424% when pulling fd9479ef4560b68231d5b70fc9d27ff31b369c41 on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.004%) to 99.568% when pulling 4ef16a1c78c5a56156bce5f8470070b576750a64 on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.004%) to 99.568% when pulling 8eea10da530ab8aa0935f703bfc9083a2196fae2 on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.004%) to 99.568% when pulling 054357a2c1174b9fabc4745f24183c7ca476ab8b on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.2%) to 99.759% when pulling d8a669c2dfc3a6bdfc6a5a1521457ce1e411349a on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.3%) to 99.903% when pulling c14e550e9ac150824a7b8135ca679ae1bf7016f1 on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.4%) to 99.928% when pulling 93bd1b5654cb07948e8074273930f2356f532f40 on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.4%) to 99.976% when pulling 4806561525fb3f42fb33ba0f9b3d6b11881bd01c on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.4%) to 100.0% when pulling 2b412806e55d8310b113c8d560e73a7a9d726ee6 on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.4%) to 100.0% when pulling cb4c2c6994c4dad06e6790119aed223c9f64b67d on rework-server into 778e6f0a4f9c90c119f0e7ca4cc8f2dd7b70c7bc on master.

[coveralls]

Coverage increased (+0.4%) to 99.788% when pulling 1da37c36992512262b4de581230a8633a0f7d6ee on rework-server into 3ec27f7302ccb4463b4f36da8d1b2cfb7e0329a6 on master.

[coveralls]

Coverage decreased (-0.02%) to 99.345% when pulling 768399ab835e0f9eaeff7bd12f77714a72098384 on rework-server into 3ec27f7302ccb4463b4f36da8d1b2cfb7e0329a6 on master.

[coveralls]

Coverage decreased (-0.06%) to 99.299% when pulling f0034be321ff40522d8b390940d58dc4749b23a8 on rework-server into 3ec27f7302ccb4463b4f36da8d1b2cfb7e0329a6 on master.

[coveralls]

Coverage decreased (-0.06%) to 99.299% when pulling 68d19a4b3b33bf6ec3a9f29d0cdde41eae477b7b on rework-server into 3ec27f7302ccb4463b4f36da8d1b2cfb7e0329a6 on master.