More basic structuring of how the image inserter for ckeditor will work

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Adding a new simple style select form control to which you can pass a list of values and labels

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Further tweaks to the image picker form for rich editors

Still non-functioning, but playing with the fields that are shown

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New form control, 'image dimensions picker', js based affair that provides aspect ratio locking

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Better error debug output on RPC protocol errors for the JsonRpc2 coldbox plugin

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Making our richeditor image insertion form use the new image dimensions form control

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Image dimension picker fix: actually store the updated values of the image dimensions when they change

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