* Added preview generation fallback feature.
When a preview generation fails (often for wmv/avi files), the new code tries with less stricted (no xerror) and more time consuming options (slow+fast seek).
Fix a minor issue when stash downloads ffmpeg/ffprobe, but doesn't re-detect their paths.
* Ignore generated-graphql.tsx in 2.5
* Make movie name mandatory
* Port #395 fix to v2.5
* Differentiate front/back image browse buttons
* Move URL, Synopsis to separate rows
* Fix unknown query params crashing UI