Query Dependencies View improvements

[m_janiczek]

Currently QDV displays Queries in automated manner, which does not correspond well enough with user ability to read and categories Queries and their dependencies. To be honest, automated layout is a mess on complicated models with a lot of dependencies - it's hard to keep track of dependancies between dim or stage tables and fact tables. Add ability to freely move Queries in Query Dependencies View (possibly with grid, and even better, with possibility to name grid rows and columns), so user can arrange them as he/she desire.