changes all linkedin settings to be URL instead of username,
this is needed because different types of accounts have different urls for example a person vs a company
adds options to linkedin setup to specify individual or company
Merge branch 'linked-in-80705300' of github.com:G5/g5-widget-garden into linked-in-80705300

Conflicts:
	public/static/components/footer-info/show.html
	public/static/components/social-links/show.html
reverts back to linkedin username
 reverts back to linkedin_username in index
 reverts to linkedin_username in social links index
 reverts to linkedin_username in social links index
reverts to linkedin_username in social-links edit
styles the edit form a little bit with fieldset and legend
Merge pull request #333 from G5/linked-in-80705300

[WIP] changes all linkedin settings to be URL instead of username,