Mark Stacey faebdd0ccd Add platform-specific build type manifest modifications (#12638) ... The build system now supports platform-specific modifications to the manifest for each build type. The need to customize the `id` on Firefox motivated this change. To support this, a new directory was made in each build type directory for manifest changes. The images currently in this directory were moved into an `images` subdirectory. This new `manifest` directory can include each manifest file currently in `app/manifest`. The `_base.json` file is assumed to exist, but the platform manifest modifications are optional.		2021-11-10 19:33:59 -03:30
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images	Add platform-specific build type manifest modifications (#12638)	2021-11-10 19:33:59 -03:30
manifest	Add platform-specific build type manifest modifications (#12638)	2021-11-10 19:33:59 -03:30