doc: Scrubbed ALL sensor library descriptions

In an effort to clean-up and standardize UPM library
documentation, this commit updates (and in most cases,
unifies) the CMake description string AND CXX header
@comname string.

Strings were taken from datasheets when possible, spelling
mistakes were addressed, copy/paste errors where fixed,
Title Case was used, etc.

    * Tested/updated/added @web tags
    * Added/updated invalid sensor images
    * Added/updated @man tags, added missing manufacturers

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/nmea_gps/CMakeLists.txt

@@ -1,5 +1,5 @@
 upm_mixed_module_init (NAME nmea_gps
-    DESCRIPTION "Generic driver for GPS NMEA sensors"
+    DESCRIPTION "Generic Serial Interface for GPS NMEA Devices"
     C_HDR nmea_gps.h
     C_SRC nmea_gps.c
     CPP_HDR nmea_gps.hpp

src/nmea_gps/nmea_gps.hpp

@@ -41,9 +41,9 @@ namespace upm {
   /**
    * @library nmea_gps
    * @sensor nmea_gps
-   * @comname Generic Serial GPS NMEA device
+   * @comname Generic Serial Interface for GPS NMEA Devices
    * @type gps
-   * @man dfrobot seed
+   * @man dfrobot seeed
    * @con uart gpio
    * @altname VK2828u7 ublox LEA-6H
    *