Fix a reinstall problem from v0.0.4

Delete the version option on uninstall. The problem is still there if
the plugin i manually deleted.
New version on readme
Update readme.md
Updated readme.txt
Close #6 Added quick links to contextual help
Added wp-cron visualization and deletion
Added permalinks table view
Enhanced responsiveness
Updated italian language
Added new hook for install/update plugin
New table class to show data in views
Using the new install/update hook for setting options
New function to reset url after a GET query
Fix an issue tha made impossible to change console colors
Minor changes
Update readme files
Update WpDevTool/readme.txt
Update WpDevTool/readme.txt
Update WpDevTool/readme.txt
Fix a problem with wp_editor styles