Add features from OpenWRT

Add features inherited from OpenWRT as well as OLSR Restart and 
screenshot fixes.

arednGettingStarted/advanced_config.rst

@@ -270,7 +270,7 @@ The **Advanced Configuration** section allows you to change settings for various
    :alt: Advanced Configuration
    :align: center
 
-Above the settings table there are links that allow you to 1) view the node help file, 2) reboot the node, or 3) reset the node to a firstboot or "N0CALL" configuration.
+Above the settings table there are links that allow you to 1) view the node help file, 2) reboot the node, or 3) reset the node to a firstboot or "NOCALL" configuration.
 
 Specific values can be set for the following items. You may change these settings and then click the *Save Setting* button.  You may also reset these items to their default values by clicking the *Set to Default* button.
 
@@ -290,8 +290,10 @@ Specific values can be set for the following items. You may change these setting
   Specifies whether Power over Ethernet should be enabled on nodes with ports that support PoE passthrough.
 
 *USB Passthrough*
-  Specifies whether the USB port should be enabled on nodes having a USB port.
+  Specifies whether USB power passthrough should be enabled on nodes having a USB port.
 
+*OLSR Restart*
+  The OLSR routing process can be restarted by clicking the checkbox and then clicking the *Save Setting* button. This can be useful when you want your node to rebuild its mesh routing table but you do not want to do a full reboot.
 
 Node Reset Button
 -----------------
@@ -300,7 +302,7 @@ The reset button on an AREDN |trade| node has two built-in functions based on th
 
 With the node powered on and fully booted:
 
-* **Hold for 5 seconds to reset the password and DHCP server**
+* **Hold for 5 seconds to reset the password and DHCP service**
 * **Hold for 15 seconds to return the node to “just-flashed” condition**
 
 On some equipment models it may be possible to accomplish these reset procedures by pressing the *Reset* button on the PoE unit.

arednGettingStarted/basic_setup.rst

@@ -7,7 +7,7 @@ After you have installed the AREDN |trade| firmware, rebooted the device, and co
 ----------
 
 .. image:: _images/01-setup-nocall.png
-   :alt: Setup N0CALL
+   :alt: Setup NOCALL
    :align: center
 
 ----------

arednGettingStarted/downloading_firmware.rst

@@ -14,5 +14,13 @@ There are two types of firmware images: one for the first-time replacement of th
 
 Once you have selected the correct firmware image for your device, click the link to download the image file to your local computer. Make a note of the download location on your computer, since you will need to use that image to install the AREDN |trade| firmware on your device.
 
+**Features Inherited from OpenWRT for New Architectures**
+  The latest AREDN |trade| firmware contains features which are inherited from the newest OpenWRT upstream release (19.07). The OpenWRT *Release Notes* describe these new features and can be found here: `OpenWRT 19.07 Release Notes <http://openwrt.org/releases/19.07/start>`_
+
+  One important change is the inclusion of a new *target* for the firmware, labelled "ath79", which is the successor to the existing "ar71xx" target. The OpenWRT team explains the new target here: `ath79 <http://openwrt.org/docs/techref/targets/ath79>`_. Their main goal is to bring the code into a form that will allow all devices to run a standard unpatched Linux kernel. This will greatly reduce the amount of customization required and will streamline the firmware build process.
+
+  You may notice that the AREDN |trade| firmware download page has one or both of these firmware versions for specific devices. Refer to the latest `firmware notes <http://downloads.arednmesh.org/snapshots/trunk/readme.md>`_ in order to ensure you have the correct firmware image for your specific device.
+
+
 .. |trade|  unicode:: U+00AE .. Registered Trademark SIGN
    :ltrim: