Improved the StringUtils unit tests and handling of strange arguments

Conflicts:
	global/src/main/java/net/mms_projects/utils/StringUtils.java
	global/test/net/mms_projects/copy_it/tests/StringUtilsTest.java
The Android clipboard utils now use the copy and paste service interfaces

Conflicts:
	global/src/main/java/net/mms_projects/copy_it/ClipboardUtils.java