Refs #21327; renamed tinymce utils object from EEAPluginsUtils to EEATinyMCEUtils in order to make it more obvious what it will store
Refs #21327; renamed eeapluginsutils.js to eeatinymceutils.js
Refs #21327; Added upgrades profile and folder
Refs #21327; Changed the following:

- Removed debounce function from editor_plugin of eeafullscreen since
  it is now loading eeapluginsutils.js which contains this function
- Properly call debounce in order to get correct context
- Removed jquery loading of eeatinymceutils since we now load it using
  portal_registry, avoiding thus 4 extra requests
- Modified upgrade step to go from 1.6 to 1.9
Refs #21327; removed ajax cache set since I no longer load script through ajax
Refs #21327; added upgrade which modifies the char_limit settings to set the field value as a key and it's plugins as a dict value