Fixed: issue #56 - import and cut, copy & paste works fine, I added a routine which increments the numbers at the end of the names, IDs will be generated automaticcaly, if the ID already exists, and the appropriate name will be increased (e.g. "mixerRight" -> "mixerRight0", "input3" -> "input4" etc.)

Improvement: import ignores lines which start with an known type but ends not with an ";"
Tidy up: deleted the "resources" folder, all static data is in the index.html file
Prepared: Looking for a solution to semi-automatic arrange imported nodes without coordinates

Removed the extern files, except the JSON file with the node descriptions, this will be loaded in offline mode too.

- fixed: clear selected nodes, works with several or all selected nodes (reason: two counting variables with the same name "i" where used in two nested loops)
- new: change node names (you can assign names to the nodes, these will be used as IDs if exported or re-imported to CPP (Arduino code)
- fixed: import merges imported nodes to existings ones, skipping nodes with the same name
- fixed: tooltips are now working, extracting the first paragraph of the HTML code
- new: nodes definition extracted to JSON file
- new: nodes help pages extracted to single HTML files
- new: form pages extracted to single HTML files
- new: asynchronous loading of JSON, help and form data, data will only be loaded when needed
- style: adapted the size of the palette, labels had been partially hidden

Small correction

https://github.com/PaulStoffregen/Audio/pull/119

https://forum.pjrc.com/threads/27409-Play-RAW-from-Serial-Flash?p=77666#post77666

Remove blah blah. Document based on control_sgtl500.h and
control_sgtl500.cpp.
Clarify that only one frequency modifier can be active at one.  Add
suggestions for pop-free ramping as indicated in datasheet.
Re-order function descriptions to group related ones and put in order of
signal flow.

Add #defines to control_sgtl5000.h to make selecting frequency modifier
(such as tone control) easier.