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/nlgpio16/CMakeLists.txt

@@ -1,5 +1,5 @@
 set (libname "nlgpio16")
-set (libdescription "Module for the Numato Labs GPIO 16 USB")
+set (libdescription "16-channel USB GPIO Module")
 set (module_src ${libname}.cxx)
 set (module_hpp ${libname}.hpp)
 upm_module_init(mraa)

src/nlgpio16/nlgpio16.hpp

@@ -54,7 +54,7 @@ namespace upm {
     /**
      * @library nlgpio16
      * @sensor nlgpio16
-     * @comname NLGPIO16 16 channel USB GPIO Module
+     * @comname 16-channel USB GPIO Module
      * @type other
      * @man numatolabs
      * @con uart