libcommon: Fix mobj-nofit-crunch behavior regression; cleanup
Fixed|Console|UI: Crash when using autocompletion

The logic for reshowing the completion popup was incomplete.

This commit fixes #1645.
Builder|OS X: Exclude compiled Python files from signing

The launcher is written in Python, and the compiled versions of the
Python modules may be updated when the user runs the app. Therefore
they cannot be included in the signed files.
Merge branch 'master' into low-latency-input