Minor UI Changes of project

[x] Description should not be required
[x] Options in Select field type should be required
[x] js and css file paths should not start with ../../..
[x] Write docs for Js based components and link to download resources
[x] Rename select field type to single select
[x] rename Select Input to Dropdown in form view types of single select field type
[x] add cols feature for all field type inputs
[x] add back button for content list page
[x] Check order of content type field types
[x] Check all field properties and use in form input if possible
[x] Add Time picker mode for DATE_TIME field type
[x] Remove old MarkdownEditor component

fluentcms / FluentCMS