Fixing issues at https://github.com/RFO-BASIC/Basic/issues/87#issuecomment-17576660

Removed "android.permission.ACCESS_NETWORK_STATE" and the intent filter
"category.BROWSABLE" (no need)
Fixed BASIC! crash when run from the launcher
Fixed launching .bas with spaces in the filename
Prevent runBackgroundLoader() that loads the sample programs when
launched from a shortcut / .bas
Shortcuts and running editor work ok on all my phones.
Launching .bas from file explorer works ok on my LG Nexus 4 (4.2.2), but
crashes on my Samsung Galaxy S 3 (4.1.1) and my Sony Xperia Play (4.0.4)