Converted TorrentTableView from older style cell based table to more modern view based
* floating group rows are now used for an improved groups experience
* individual group indicators are hidden when _Use Groups_ is selected to minimize visual clutter (see #3328 )
* removed negated `usesAlternatingRowBackgroundColors` flag for minimal view in Controller.mm (personal preference - easy to restore)
* Sync translations with code
* Sync translations with Transifex
* Remove Mac menu title that isn't displayed and shouldn't be translated
* Add context to logging level strings in GTK client
* Use "µTP" consistently in code
* Use ellipsis instead of three docs in Qt client strings
* Close HTML tags in blocklist-related strings
* Remove trailing space from a translatable string in Qt client
* Add missing plural forms for English strings in Qt client
* Fix spelling: metaInfo -> metainfo
* Handle default value for `PrefWindowSize` in code
* Add new Mac client resources to Transifex config
* Remove non-user-visible titles from XIB files
* Sync translations with code
* Sync translations with Transifex
