Merge branch 'master' into gui_linenumbers
[ru] 2  new false frends rules for Russian
make example tests run
[pl] and more disambiguation
tiny code cleanup
[pl]... and more
[eo] detect some errors described in PMEG here:
     http://bertilow.com/pmeg/gramatiko/pasivo/pasivigeblaj_frazoj.html#i-lep
[ca] Improved rule HAVER_DE_PARTICIPI
[ca] Fixed false alarms
very tiny code cleanup
[pl] more disambiguation to get rid of false alarms
[de] fix some false alarms
tiny code cleanup
[de] fix some false alarms
[ru] simplify new rules
[ru] add suggestion and url to rules
fix a subtle bug with unification
[pl] more disambiguation is good for everyone
i18n update from transifex
[ru]  new false frends rules