v1.9.0

[danimalweb]

• [X] Fragment Cache is broken #250
• [X] Update and require Node Version 6.x #249
• [X] Add taxonomy only template route #247
• [X] Fix PHP Linter to exclude template files #246
• [X] Fix dashboard widget theme option #244
• [X] Ajax Form Construct Data Sanitize #243
• [X] Submitting AjaxForm from localhost fails to save data #240
• [X] social svgs padding and fill="currentColor" #239
• [X] Add file timestamp to svg sprite. #237
• [X] Empty $user_email_address in Contact form demo #236
• [X] Update CSS & JS for Bootstrap 4 Beta Release