MDL-41551 theme_afterburner: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_anomaly: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_arialist: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_base: convert base to use core_renderer::blocks and to always render block regions
MDL-41551 theme_binarius: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_bootstrapbase: fix a bug with bootstrapbase side-post only display
MDL-41551 theme_boxxie: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_brick: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_canvas: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_formal_white: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_formfactor: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_fusion: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_leatherbound: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_magazine: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_nimble: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_nonzero: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_overlay: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_sky_high: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_splash: convert to use core_renderer::blocks and to always render block regions
MDL-41551 theme_standardold: convert to use core_renderer::blocks and to always render block regions