making grids update when you come back from modifying them

 + grids now refresh their content when needed

 ! the popups do not show the updated changes....

 TODO: make the dialog show the updated changes.... or they could just simply dismiss themselves when you click them
making imageviews update when they need to

 + dialogs dismiss themselves when you click modify...this way, i dont need to dynamically update their image too

 + in ModifyProfile.java and ModifyProject.java, the imageviews now properly update when you choose an image