add some padding by nesting layout elements

templates/documentation/about.hamlet

@@ -1,33 +1,34 @@
-<div .col-sm-9 .jumbotron>
-  <h2>
-    git-annex watches over your files
-  <p>
-    It will automatically notice changes, and keep files in sync between #
-    here and repositories elsewhere.
-  <p>
-    For full details, see #
-    <a href="http://git-annex.branchable.com/">the git-annex website</a>.
-  <hr>
-    git-annex is © 2010-2013 Joey Hess. It is free software, licensed #
-    under the terms of the GNU General Public License, version 3 or above. #
-    This webapp is licensed under the terms of the GNU Affero General #
-    Public License, version 3 or above. #
-    For full license information, see #
-    $if builtinlicense
-      <a href="@{LicenseR}">
-        this page.
-    $else
-      <a href="http://git-annex.branchable.com/license">
-        this page.
+<div .col-sm-9>
+  <div .jumbotron>
+    <h2>
+      git-annex watches over your files
     <p>
-    The source code for git-annex can be downloaded #
-    <a href="http://source.git-annex.branchable.com/">here</a>.
+      It will automatically notice changes, and keep files in sync between #
+      here and repositories elsewhere.
     <p>
-    Development of git-annex is made possible by #
-    <a href="http://git-annex.branchable.com/assistant/thanks/">
-      many excellent people
-    . &hearts;
-    <p>
-    Version: #{packageversion}
-    <br>
-    Build flags: #{unwords buildFlags}
+      For full details, see #
+      <a href="http://git-annex.branchable.com/">the git-annex website</a>.
+    <hr>
+      git-annex is © 2010-2013 Joey Hess. It is free software, licensed #
+      under the terms of the GNU General Public License, version 3 or above. #
+      This webapp is licensed under the terms of the GNU Affero General #
+      Public License, version 3 or above. #
+      For full license information, see #
+      $if builtinlicense
+        <a href="@{LicenseR}">
+          this page.
+      $else
+        <a href="http://git-annex.branchable.com/license">
+          this page.
+      <p>
+      The source code for git-annex can be downloaded #
+      <a href="http://source.git-annex.branchable.com/">here</a>.
+      <p>
+      Development of git-annex is made possible by #
+      <a href="http://git-annex.branchable.com/assistant/thanks/">
+        many excellent people
+      . &hearts;
+      <p>
+      Version: #{packageversion}
+      <br>
+      Build flags: #{unwords buildFlags}