Merge pull request #123 from blazf/TStr

TVec cleanup, now comes with std::move and std::swap; old bug uncovered and eliminated.
Lc, Uc, Cap, CmpI, EqI
Merge pull request #124 from lrei/TReiStr

Lc, Uc, Cap, CmpI, EqI
Merge branch 'TStr' of github.com:qminer/qminer into TStr
Fixed reporting in stopwatch