[config] Added funtion to resize vim window (GUI, console)

Change-Id: I3baa2b9941a2734bb3a0c4a73259c62ad05047d3
[config] Added resize window funtion at startup

Change-Id: Ia80ea40b4e650db4b6470ceab90ac7dd7c03e2db
[plugin] Changed vim-startify recently edited file list size to 5

Change-Id: I135a9c462bf1776b9648cc342198a7366827b15a