Add doxygen conf

Adding doxyconf as rA default conf for doxygen and for people if they
wish to build their doc.
Adding tools/build_doc to check app for building doc and to update
version number in documentation.
Fix few typo in src
Emblem checking

Add emblem_check transparency
Add check change during woe time
Thx to Trojal & Aleos for the help and Airei for reminding this