Exporting a debug log may feel too tedious due to scroll-to-bottom requirement

[crwood]

In order to encourage users to review debug logs for potentially-sensitive information before saving them, the somewhat-recently-landed debug log exporter requires that users scroll through to the bottom of the log before the "Copy to clipboard" and "Export to file..." buttons become active. At least one user/tester, however, has argued out that this requirement can feel too tedious and that the large warning atop the buffer should suffice to encourage users to actually review logs.