[Checkins] [zopefoundation/DocumentTemplate] a6eda1: Fix some more str/bytes issues.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/DocumentTemplate
  Commit: a6eda1c8ed82488641608308155838e146481025
      https://github.com/zopefoundation/DocumentTemplate/commit/a6eda1c8ed82488641608308155838e146481025
  Author: Hanno Schlichting <hanno at hannosch.eu>
  Date:   2017-05-15 (Mon, 15 May 2017)

  Changed paths:
    M src/DocumentTemplate/DT_String.py
    M src/TreeDisplay/TreeTag.py

  Log Message:
  -----------
  Fix some more str/bytes issues.

Turns out, the source of a DTML document should be text, and only
when rendered out over the publisher be turned into bytes.