Move Etcher instructions to a dedicated inline

wiki/src/install/inc/steps/install_with_etcher.inline.mdwn

+<div class="step-image">[[!img install/inc/infography/plug-usb.png link="no" alt="USB stick plugged in the computer"]]</div>
+
+1. Plug in the USB stick on which you want to install Tails.
+
+   <div class="caution"><p>All the data on this USB stick will be lost.</p></div>
+
+1. Open <span class="application">Finder</span> and choose
+   <span class="application">Etcher</span> in
+   <span class="guilabel">Applications</span>.
+
+   At the security warning, confirm that you want to open
+   <span class="application">Etcher</span>.
+
+   <span class="application">Etcher</span> starts.
+
+   [[!img install/inc/screenshots/etcher_in_mac.png link="no" alt=""]]
+
+1. Click the <span class="button">Select image</span> button.
+
+   Choose the USB image that you downloaded earlier.
+
+1. Etcher should automatically select your USB stick. Otherwise, click the
+   <span class="button">Change</span> link to choose a different USB stick.
+
+   <div class="step-image">[[!img install/inc/infography/install-tails.png link="no" alt=""]]</div>
+
+1. Click <span class="button">Flash</span>.
+
+   Enter your password if you are asked for it.
+
+   The installation takes a few minutes.
+
+   After installing Tails, <span class="application">Etcher</span> verifies the
+   installation.
+
+1. If a notification about the USB stick not being readable appears,
+   click <span class="button">Eject</span> to eject the USB stick.
+
+1. Close <span class="application">Etcher</span>.

wiki/src/install/mac/usb.mdwn

@@ -41,45 +41,7 @@ Install Etcher
 Install Tails
 -------------
 
-<div class="step-image">[[!img install/inc/infography/plug-usb.png link="no" alt="USB stick plugged in the computer"]]</div>
-
-1. Plug in the USB stick on which you want to install Tails.
-
-   <div class="caution"><p>All the data on this USB stick will be lost.</p></div>
-
-1. Open <span class="application">Finder</span> and choose
-   <span class="application">Etcher</span> in
-   <span class="guilabel">Applications</span>.
-
-   At the security warning, confirm that you want to open
-   <span class="application">Etcher</span>.
-
-   <span class="application">Etcher</span> starts.
-
-   [[!img install/inc/screenshots/etcher_in_mac.png link="no" alt=""]]
-
-1. Click the <span class="button">Select image</span> button.
-
-   Choose the USB image that you downloaded earlier.
-
-1. Etcher should automatically select your USB stick. Otherwise, click the
-   <span class="button">Change</span> link to choose a different USB stick.
-
-   <div class="step-image">[[!img install/inc/infography/install-tails.png link="no" alt=""]]</div>
-
-1. Click <span class="button">Flash</span>.
-
-   Enter your password if you are asked for it.
-
-   The installation takes a few minutes.
-
-   After installing Tails, <span class="application">Etcher</span> verifies the
-   installation.
-
-1. If a notification about the USB stick not being readable appears,
-   click <span class="button">Eject</span> to eject the USB stick.
-
-1. Close <span class="application">Etcher</span>.
+[[!inline pages="install/inc/steps/install_with_etcher.inline" raw="yes" sort="age"]]
 
 [[!inline pages="install/inc/steps/restart_first_time.inline" raw="yes" sort="age"]]