Final or close to final commit

Added Excel Report generator
Fixed some errors in json arithmetics
Added some somewhat relevant test data
Added SQLite reading, actually 2 times, one of the implementations
does't work because of some problems with the data providers that i
couldn't fix.
Tested functionallity with console and wpf clients and added a btn and
cmd for excels in the wpf client

some sqlite dlls are not commited because it seems that not all of them
are needed, so if there is problem with sqlite dlls just get the package
from nuget