Fixed error in equation generator.
Removed EMail function. Script creates a new target directory 'target' in the same directory as the document file where everything gets stored.
Added Google docs menu to execute Markdown converter without going through Scripts.
Added support to convert equation under the cursor only.
Go upwards until the document root if scanning for an equation.
No double line breaks between item lists.
Reintegrated support to send converted MD as an email.
Changed menu naming
Added UI menus.
Added an option to save MD and attachments to GDrive instead of sending emails.