(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 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;
* (Graphics view) Changed height of blocks. Variable thread-block height;
* (Tree widget) Disabled sorting by name to save order of threads displayed on graphics view;
* (Profiler reader) Changed type of value returned by fillTreesFromFile().
