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/gp2y0a/CMakeLists.txt

@@ -1,5 +1,5 @@
 upm_mixed_module_init (NAME gp2y0a
-    DESCRIPTION "Analog Infrared (IR) based distance sensor"
+    DESCRIPTION "Analog Infrared (IR) Based Distance Sensor"
     C_HDR gp2y0a.h
     C_SRC gp2y0a.c
     CPP_HDR gp2y0a.hpp

src/gp2y0a/gp2y0a.hpp

@@ -37,11 +37,12 @@ namespace upm {
   /**
    * @library gp2y0a
    * @sensor gp2y0a
-   * @comname GP2Y0A IR Proximity Sensor
+   * @comname Analog Infrared (IR) Based Distance Sensor
    * @altname Grove 80cm IR Proximity Sensor
    * @type light
    * @man seeed
    * @con analog
+   * @web http://wiki.seeed.cc/Grove-80cm_Infrared_Proximity_Sensor/
    *
    * @brief API for the GP2Y0A family of IR Proximity Sensors
    *