1) Added active time calculation (this is duration excluding context switch time).
2) Columns "Duration", "Self Dur.", "Self %", "% / Frame", "Active time", "Active %" in Plain mode shows total values per frame (sum of all values per frame).
(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.
(ProfGraphicsView) Clickable indicators of ProfChronometerItem;
(ProfTreeWidget) Jump to items on scene from ProfTreeWidget;
(profiler GUI) Fixed typos and warnings;
(profiler GUI) Lightening profiler::colors to be more bright;
(ProfTreeWidget) Displaying per frame and per thread statistics;
(ProfGraphicsView) Draw chronometer item text in Difference mode to be more readable.
(profiler GUI) Added plain vector of ProfBlocks (additional information for gui) for fast access;
(ProfGraphicsView) Removed unnecessary methods; small refactoring;
(ProfTreeWidget) Removed unnecessary map of tree items;
(ProfGraphicsScrollbar) Added colorizing of minimap (green = low duration, red = long duration);
(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;
(GraphicsView) Added a lot of comments;
(GraphicsView) Changed base unit from milliseconds to microseconds;
(GraphicsScrollbar) Fixed fluttering on very small scale;
(GraphicsView)+(TreeWidget) Chronometer item behavior: if selection made from left to right - selecting all items by intersection with rectangle; if selection made from right to left - selecting all items which are strictly inside selection rectangle.
