Fixed do-while cycle in trik and russian c generators
Worked arround a bug with setting edge`s pos to nan.
Fixed some bugs of inserting node into edge
Made generators working in merged if inside merged if case
Merge pull request #1222 from dvvrd/robots

QReal:Robots bugfixes for some teachers
fixed compilation on Windows
Merge branch 'master' of https://github.com/qreal/qreal
corrent selection of node elemnts on creation. fixed #1212.
Merge pull request #1223 from qreal/bug-1212

Corrent selection of diagram elements on creation. fixed #1212
Added timeline reserved variable
Fixed some expression parser`s bugs;
utils:Number code bettered a bit
Made new expression parser`s numbers compilling in other parts
Fixed some warnings
Timer variable made working by model time when 2D model selected
Added timeline varible generation
Made unary minus operator working for expression parser
fixed uninitialized variable
setting default value for association from empty string to "no_arrow" since latter is the default value for it in gui
Removed zoom settings from editor page
Fixed color full sensors generation in function blocks
Removed case sensetivity in variables identifiers