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/lpd8806/CMakeLists.txt

@@ -1,5 +1,5 @@
 set (libname "lpd8806")
-set (libdescription "Digital RGB LED strip")
+set (libdescription "Digital RGB LED Strip Controller")
 set (module_src ${libname}.cxx)
 set (module_hpp ${libname}.hpp)
 upm_module_init(mraa)

src/lpd8806/lpd8806.hpp

@@ -44,10 +44,11 @@ namespace upm {
 /**
  * @library lpd8806
  * @sensor lpd8806
- * @comname LPD8806 RGB LED Strip Controller
+ * @comname Digital RGB LED Strip Controller
  * @type led
  * @man adafruit
  * @con spi
+ * @web https://www.adafruit.com/product/306
  *
  * @brief API for the LPD8806 RGB LED Strip Controller
  *