Restore.
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
Merge branch 'master' of https://github.com/qreal/qreal into metamodelingOnFly

Conflicts:
	qrgui/pluginManager/editorManager.h
	qrgui/pluginManager/interpreterEditorManager.h
	qrgui/pluginManager/proxyEditorManager.h
	qrgui/qrgui_ru.qm
	qrgui/qrgui_ru.ts
	qrgui/view/private/exploserView.cpp
	qrgui/view/private/exploserView.h
Hidden properties removing.
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
Default autosave interval decreased to one minute
Genereated code is now opened only by generate actions triggering
Restored case sensivity;
Sensor variables made starting from lowercase;
Corrected examples;
Fixed file dialogs state saving after cancelling it.