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/my9221/CMakeLists.txt

@@ -1,5 +1,5 @@
 upm_mixed_module_init (NAME my9221
-    DESCRIPTION "12-channel constant current LED driver with grayscale"
+    DESCRIPTION "12-channel Constant Current LED Driver with Grayscale"
     C_HDR my9221.h
     C_SRC my9221.c
     CPP_HDR my9221.hpp groveledbar.hpp grovecircularled.hpp

src/my9221/grovecircularled.hpp

@@ -44,7 +44,7 @@ namespace upm {
   /**
    * @library my9221
    * @sensor grovecircularled
-   * @comname Grove Circular LED
+   * @comname Circular LED
    * @type display
    * @man seeed
    * @web http://www.seeedstudio.com/wiki/Grove_-_Circular_LED

src/my9221/groveledbar.hpp

@@ -45,7 +45,7 @@ namespace upm {
   /**
    * @library my9221
    * @sensor groveledbar
-   * @comname Grove LED Bar
+   * @comname LED Bar
    * @altname MY9221 LED Bar
    * @type display
    * @man seeed