v0.39

• [BUGFIX] Fix queries for promgen.Rule and promgen.Site #170
• [BUGFIX] Fix rule import for Project/Service #165
• [BUGFIX] Migrate from sites.site to promgen.site to fix references #164
• [IMPROVEMENT] Add PROMGEN_SCHEME to support https links #160
• [IMPROVEMENT] Add silence button to blackbox exporter entries #156
• [IMPROVEMENT] Import probe config from blackbox_exporter #155
• [IMPROVEMENT] Read-only rule page #169
• [INTERNAL] Cleanup URL paths #167
• [INTERNAL] Minor version updates and Dockerfile cleanup #163
• [INTERNAL] Refactor apk commands in Dockerfile #172
• [INTERNAL] Refactor macro for common use case #168
• [INTERNAL] Remove fragile celery metrics #171