RFR: 7328: Incorrect sort order in method profiling page

[Marcus Hirt]

Also fixing some import warnings.

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Commit messages:
 - 7328: Incorrect sort order in method profiling page

Changes: https://git.openjdk.java.net/jmc/pull/276/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=276&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7328
  Stats: 29 lines in 7 files changed: 19 ins; 7 del; 3 mod
  Patch: https://git.openjdk.java.net/jmc/pull/276.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/276/head:pull/276

PR: https://git.openjdk.java.net/jmc/pull/276