changed 'include_lib' behaviour - if the application was not found, it behaves like 'include';
fixed include_lib issue when using relative paths like "../include/a.hrl";
fixed relative paths completion;
changed source path setup method - put actions requiring write action under write action (by Sergey Savenko)
Merge branch 'include-fixes' of https://github.com/deadok22/intellij-erlang
small cleanup
added logging to doSetUpSourcePath