(profiler_gui) Added possibility to change where chronometer (time-meter) item text will be painted: at the top of the scene, in the center or at the bottom of the scene. See menu View -> Chronometer text.
(EasyGraphicsView) Scale indicator rework;
(EasyMainWindow) Added menu "View" with actions "Expand all" nad "Collapse all";
(EasyGraphicsScrollbar) Fixed wrong mouse position calculation when scaling (with mouse wheel) on minimap.
(profiler_gui) Moving sources into separate files;
(profiler_gui) Rename Prof* classes into Easy*;
(EasyGraphicsView) Optimized performance by not painting items which were not expanded in TreeWidget. While there are no range selected for TreeWidget, only top-level blocks are painted on scene.
(profiler Reader) Added self_duration field for statistics;
(profiler Reader) Removed #ifdef macros;
(profiler Reader) moved BlocksTree, BlocksTreeRoot and thread_blocks_tree_t types inside profiler namespace;
(profiler GUI) Added globals.h and globals.cpp containing global variables and signals; Added profiler_gui namespace;
(ProfTreeWidget) Added context menu "Select columns" to make it possible to hide columns;
(ProfTreeWidget) Added percent statistics for blocks (Self %, Parent % and Frame %); Added displaying of total thread duration;
(ProfGraphicsScrollbar) Added context menu to make it possible to choose which thread to display on minimap;
(ProfGraphicsView) Highlighting currently selected thread;
