clear unneeded libraries/resources
switch FTP library

plus other small changes
fix in cross-thread operation

when installing/removing the WebUI
implement speed limits again
changed tray message format (#34)
if connection fails on startup go to offline mode

and retry to connect after 30 seconds.
closing new-account form works like cancel (#36)
clear profiles list before populating

to prevent profiles from being added twice
updated readme
v2.5.3 finalized