small fixes
Merge branch 'master' of https://github.com/aporto/mariamole
-added label to display current line and column on text editor.cpp
-fixed unification of linux/windows builder code
-fixed context menu for editor tab (Now it appears only when tab is clicked)
-added new context editor, dedicated to the code editor.cpp
-Added functionality: Open Arduino reference for the word at the cursor (via code context menu)
-fidex child-parent relation on all mainwindow child windows