Improve handling of Russian house numbers

[n-timofeev]

The Russian community has an agreement on the format of house numbers, but it is slightly different from how addresses are usually written. Example: "5 литера Б" is "5 литБ" in OSM. This can be fixed by client-side preprocessing, but I think it should be done by the search server.
Most common values (dots are optional):

Full	Abbreviations	OSM	Example
дом	д.	-	42
корпус	корп. / кор. / к.	к	42 к1
литера	литер / лит.	лит	42 литА
строение	стр. / с.	с	42 с1
сооружение	соор.	соор	42 соор1
флигель	флиг. / фл.	фл	42 фл1

In addition, the search will fail if input string contains additional data such as room number. Perhaps, we should create a list of tokens that can be deleted?

[lonvia]

Also блок -> бл (see #3049 (comment))