Revert "App functions, ui and server scripts added"

This reverts commit 016028026cd3e55b56115edc843b8eab0fa2df15.
Revert "Revert "App functions, ui and server scripts added""

This reverts commit 41b9e7b23b7426330155e6bbd03e79138da43cb3.
Avecom.R - read csv files from the main directory