Several issues fixed

Thanks to all the great feedback and community help many issues were brought to my attention. Most of these have now been fixed.

#38 Log not rendering
#37 Load and searching indicators
#36 Highlight text control causes performance issues for very busy files
#35 Log stops updating shortly after roll-over bug
#34 Target Net 45 rather than Net 46
#33 File encoding incorrect for log produced by batch file with accented characters included. bug
#32 Use monospaced font
#30 Performance: Automatically adjust next poll period to account for network latency enhancement
#28 Take a closer look at Encoding bug
#22 Tail file even after it has been newly created

In the next release I will address the issue of slow opening time for large files