Update cgeo inspection standards for Intellij IDEA
Use incrementation operator
Suppression warnings for external KXmlSerializer
Remove redundant else constructs
Remove unused fields
Remove unused package cgeo.geocaching.concurrent
Remove unused methods
Use multicatch
Make constants constant
Do not use questionnable variable names
Convert files to Unix format
Use EnumMap where available
Do not use instanceof in place of inheritance
Remove extra functionality from LeastRecentlyUsedSet

LeastRecentlyUsedSet does not need to be either serializable or
clonable. This complicates the code and brings no value to cgeo.
Remove unnecessary parentheses
Make method synchronized instead of block