Server: Fix Views, in particular Music View

Closes GH-1
FServer: Move FriendlyName out of the c'tor params
FServer: Remove FriendlyName from c'tor
Put some identifier magics into constants
Use GlobalAssemblyInfo
Util: fix some ca warnings
Server: Add and use HtmlTools
Correct spelling of SimpleDLNA
Fix some warnings
GUI: Cleanup listviewitem logic
GUI: Avoid (silent) logging exceptions after window handle gets destroyed
Implement Refreshing state
SSDP: Fix thread-safety issue
GUI: Load mounts in parallel
Bump version to 0.9.1
GUI: Do not enforce "one instance only" in DEBUG
GUI: Do use a seperate log file when DEBUG
GUI: Log unhandled exceptions (and still die)
FServer: There can only be one Vacuumer
FSServer: Handle DbExceptions