Interim networking code commit in case of dev catastrophe!

DB shape change from v29 to add peer info.
New NetworkRepository to handle above.

Peer handshaking with v2 anti-DoS PoW code.
Handshaking refactored into a state-machine-like enum.
Some peer-related API calls added.

Peers exchange pings, heights, peers.

No actual peer sync yet.

Other changes:

Peer version info taken from Maven build properties/resource file.
AnnotationPostProcessor more resilient when fetching PathItems.
Per-repository session debugging flag that can be toggled at will.
HSQLDBRepository.delete() now returns int so callers can detect
 whether anything was actually deleted.
Some renaming to settings.

pom.xml

@@ -8,6 +8,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<bouncycastle.version>1.60</bouncycastle.version>
+		<dagger.version>1.2.2</dagger.version>
 		<hsqldb.version>r5836</hsqldb.version>
 		<jetty.version>9.4.11.v20180605</jetty.version>
 		<jersey.version>2.27</jersey.version>
@@ -16,10 +17,17 @@
 		<swagger-api.version>2.0.6</swagger-api.version>
 		<swagger-ui.version>3.19.0</swagger-ui.version>
 		<felix-bundle-plugin.version>3.5.0</felix-bundle-plugin.version>
+		<build.timestamp>${maven.build.timestamp}</build.timestamp>
 	</properties>
 	<build>
 		<sourceDirectory>src/main/java</sourceDirectory>
 		<testSourceDirectory>src/test/java</testSourceDirectory>
+		<resources>
+			<resource>
+				<directory>${basedir}/src/main/resources</directory>
+				<filtering>true</filtering>
+			</resource>
+		</resources>
 		<plugins>
 			<plugin>
 				<artifactId>maven-compiler-plugin</artifactId>
@@ -357,6 +365,11 @@
 			<artifactId>jetty-rewrite</artifactId>
 			<version>${jetty.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>org.eclipse.jetty</groupId>
+			<artifactId>jetty-client</artifactId>
+			<version>${jetty.version}</version>
+		</dependency>
 		<!-- Jersey -->
 		<dependency>
 			<groupId>org.glassfish.jersey.core</groupId>
@@ -416,5 +429,10 @@
 			<artifactId>bcprov-jdk15on</artifactId>
 			<version>${bouncycastle.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>org.bouncycastle</groupId>
+			<artifactId>bctls-jdk15on</artifactId>
+			<version>${bouncycastle.version}</version>
+		</dependency>
 	</dependencies>
 </project>