Issue 3257 - Create uninstallation page in adblockplus.org

includes/uninstall-abp.md

Index: includes/uninstall-abp.md
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+++ b/includes/uninstall-abp.md
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+#{{reasons-header[Form heading] Please select the reason(s) why you uninstalled Adblock Plus:}}
+
+<form id="reasons-form" action="uninstall-abp-submit" method="post">
+  <ul id="reasons">
+    <li>
+      <label>
+        <input id="reason-other" type="checkbox" name="reason" value="0v0" />
+        <span>{{reason-other[Last uninstallation reason] Other, namely...}}</span>
+      </label>
+      <textarea id="reason-other-input" class="hidden" name="reasonOther" placeholder="{{reason-other-placeholder[Textarea placeholder text, appears after selecting 'Other, namely...' option] Please explain why you are uninstalling Adblock Plus}}"></textarea>
+    </li>
+  </ul>
+  <button id="submit-form" type="button">{{submit[Submit button text] Submit}}</button>
+  <span class="error-label">{{error-msg[Error message, is being shown after submission if no item selected] Please select at least one of the options above}}</span>
+</form>
+
+{{disclaimer[Disclaimer below form] By clicking Submit, you are sending your response to Adblock Plus. Please see our [privacy policy](https://adblockplus.org/privacy).}}
+{: .disclaimer }