added chart report page
fixed some bugs when invalid parameters were passed
added user picker to chart report page with permission checker
added everit logo and some designing
fixed bug when the start time did not updated when a worklog was
sumbitted
fixed some typos
removed unneccessary code
Changed Everit TT logo to use webresources instead of a single web link
Applied design to Settings page
Merge pull request #34 from daniel-zsigus/JIRAPLUGIN-1

Added "Chart report" page