don't loose end of comments when '#' is embedded in comment

I.e. comment like
foo = 1 # stuff with '#'

no longer loose the last tick
Test comments with embedded '#'
added wr_root in .gitignore
get_element_description: improved description
Node fetch_element returns 0 when element exists but is not available

either hidden or obsolete
load_data: skip loading unavailable elements
Ini backend: handle storage to non available element by ditching data
Merge branch 'master' of github.com:dod38fr/config-model