Images, DebugMeta, Blog

* Custom image sizes don't seem to be generated on the Linux trial
server, added some minor improvements, which btw don't fix it. Looks
like its related to WP 3.8.1
(https://wordpress.org/support/topic/add_image_size-function-not-working)
* DebugMeta would throw an error on unistyled widgets. Fixed.