Modified harEntry.getTime() to return the sum of the HarTimings, as explained in the HAR spec
Merge branch 'har-tests' into littleproxy

Conflicts:
	src/main/java/net/lightbody/bmp/core/har/HarEntry.java
Minor test updates to avoid false test failures. Changed a test url from https to http to avoid an HTTP CONNECT.
Merge branch 'har-tests' into littleproxy