Pull some cool modifiers from clean-definitions
Add str_contains_ban modifier
Fix bug with re_fullmatch for nontrivial flags
Involve title in key hashing
assets
assets again
Add determinacy test

For now only for all resources
Merge branch 'determinacy-test' into iss19-title-usage-in-hashing
Make shebangs virtualenv-friendly
Get rid of Resource suffix

From now all functions and methods operate only with meaningful prefixes
names trunks. For example, Collocations instead of CollocationsResource.

Resource classes' names still have to end with 'Resource' because trunk
is determined from them.

Resource classes received `trunk` property.
Fix utils' help on trunks
Merge branch 'modifiers' into str_modifiers
Replace some re modifiers with str as it is considered more fast
Merge branch 'simpler-infra' into test-actuality
Refactor test to be 'trunk-aware'. Somewhat dirty yet practish
add actuality test
use only two new tests in travis
Fix unittests verbosity, simplify determinacy check
Try to split tests into two travis builds, add exit code
Merge branch 'test-actuality' into iss19-title-usage-in-hashing