RFR: 5067: Content assist uses too much screen area [v3]

[Miroslav Wengner]

> bug fix: https://bugs.openjdk.java.net/browse/JMC-5067

Miroslav Wengner has updated the pull request incrementally with one additional commit since the last revision:

  5067: fixed popup size

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Changes:
  - all: https://git.openjdk.java.net/jmc/pull/139/files
  - new: https://git.openjdk.java.net/jmc/pull/139/files/de5d5495..64ffa44e

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=139&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=139&range=01-02

  Stats: 19 lines in 1 file changed: 1 ins; 16 del; 2 mod
  Patch: https://git.openjdk.java.net/jmc/pull/139.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/139/head:pull/139

PR: https://git.openjdk.java.net/jmc/pull/139