- editing bugreport.html and license.html

options which now look less cramped.

- fixed TimeBasedRollingWithArchiveRemovalTest.java which would fail when the
  number of period+currentMonth - maxHistory is placed in the previous year.
- minor editing in license.html

 - adding ignored files under logback-cire/src/test/input

build script inside logback-example/pom.xml create the lib directory.

- added test cases in relation wit ContextPropertyConverter

  Implemented as 
  
  if(le.hasCallerData()) {
    ledo.callerData = le.getCallerData();
  }
  
  as (correctly) suggested by Joern Huxhorn
- added  test case as appropriate

  The following config files will be interpreted identically:

First config file:
   
<configuration>
  <logger>...</logger>
</configuration>

Second config file:

<CONFIGURAtion>
  <loGGer>...</loGGer>
</CONFIGURAtion>
  
  This addresses http://jira.qos.ch/browse/LBCORE-76

- improved docs on TimeBasedRollingPolicy