fix tab/whitespacing on ytembed.js
Various edits to test.html

- Change title, fix relative urls
- Remove Ajax related text from original sample.html file
- Note the logged error that occasionally arises due to dialog having iframe content
- Configure editor to take ytembed externally rather than from the /plugins folder

Update not fully working yet
Fix comment error (plugin is ytembed, not oxpoints), add CSS for font icons (used for search field)
Fix indentation on test.html
Fix url path for css file used in ckeditor's editor area and add the font icon css file for it too
TEST.HTML: LOAD JQUERY PLUGIN, CHANGE CONFIG, CALL PLUGIN ON DIVS

- load ytembed jquery plugin in the header so it isn't dependent on the
  ckeditor plugin loading (note: may rename these plugins later so that
  they don't get confused with each other)
- if the config.allowedContent option isn't set to true, then (in the
  editor) when the source is checked the data attributes get stripped and
  the empty div turns into a paragraph - set to true to fix this
- call ytembed on respective divs so the videos can be displayed when
  editor is removed