(refs #33)Match committer by mail address.
Merge branch 'master' into #33_match-by-email

Conflicts:
	src/main/scala/util/JGitUtil.scala
	src/main/scala/view/helpers.scala
	src/main/twirl/repo/blob.scala.html
	src/main/twirl/repo/commit.scala.html
	src/main/twirl/repo/commits.scala.html
	src/main/twirl/repo/files.scala.html
(refs #33)Use RequestCache instead of AccountService directly.
Merge branch 'master' into #33_match-by-email

Conflicts:
	src/main/scala/view/helpers.scala
(refs #33)Improve avatar image searching behavior.
Merge branch 'master' into #33_match-by-email

Conflicts:
	src/main/scala/view/AvatarImageProvider.scala
(refs #33)Fix avatar icon and account link in the commits page for pull request.