Get rid of unnecessary configure calls upfront

If we call things at the right time in plugins - they can just go away.
Don't call loadDocument twice in review
Fix namespace handling in plugins
Use a module value for the default conf path
Add setter method on global arethusa for conf path
Use a value for base path handling
Better base path handling for translate files
Use encoded flags instead of pngs
Make BASE_PATH the responsibility of core
Temporary fix to counter #384
Don't reposition nMCollection for huge lists
No comment creation when button is disabled

Closes #371
Merge pull request #393 from latin-language-toolkit/minor_streamlining

No useless configure calls, namespace handling,  base and conf paths, no flag images