Merge branch 'release/v2.6' into develop
Removed unnecessary CSS Lines.
Adding Stripe to the add-ons page.
Updated ninja_forms_output_tab_metabox to pass the setting array to custom display function.
Adding a submit_action data in the JS so that functions can know what type of submit button was pressed.
Added nonce verification to post submissions.
Moved some CSS from Layout and styles to here to fix fields from being cut off in some themes.
Add a nf_email_user_values_title filter to be able to change the "User Submitted Vales" title sent in emails.
Fixed a typo in readme.txt
Merge pull request #209 from elliotlings/issue/207

Updated ninja_forms_output_tab_metabox to pass the setting array to custom display function.
Added a filter after the email messages have had wpautop applied. Closes #193.
Update system-status-html.php

Repeated patch to Master - here
```php
/** @global wpdb $wpdb */
global $wpdb;
echo $wpdb->db_version();
```
Merge pull request #216 from tivnet/patch-2

Update system-status-html.php
Extra processing values should now be passed properly into and out of the transient.
Fixed a php notice related to label position inside.
Added a nonce validation for better security.
Calc fields that use advanced equations should now function properly when referencing other advanced calculation fields.
If the processing class is set, list fields shouldn't revert to default values.
Update README.md

Small layout corections
Update README.md

URL fix