find usage tentative
ide config update
find usage working, rename almost working
Tide up of class names, package names and plugin descriptor
Provided better descriptions for FindUsage
First working commit of FindUsages plus Rename
Merge branch 'master' into find_usage

Conflicts:
	META-INF/plugin.xml
	src/main/scala/amailp/intellij/robot/parser/package.scala
	src/main/scala/amailp/intellij/robot/psi/Keyword.scala
	src/main/scala/amailp/intellij/robot/psi/RobotPsiFile.scala
	src/main/scala/amailp/intellij/robot/psi/package.scala