also adjust the updateTimerInterval() when only updating grains;
editing of descriptions containing tags in plaintext;
bugfix for empty data-arrays in collections;
Merge branch 'master' into tags-support
skip live search for tags for now;
search by blur;
remove the refresh function, since this is confusing and there is no better solution currently
fixes bug, where loaded grains are always saved again
reparse description, also when nothing has changed, to avoid non richtext bugs when tabbing through
render new created days at the beginning of the list - not the end (data passing chain was broken for collection.push())
indicate times below one minute - starting with a full minute is confusing
enhanced styling, removed search term input field
minor styling enhancement for day grouping
several small styling enhancements
better alignment of timeline circles
introduce possibility to sort grains by started, project & activity
minor styling enhancement, DRY out code for grouping
make filename lowercase
avoid adding timers, when grains are ended & not running (caused a memory leak)
design & alignment enhancements, remove icon html-elements to keep a single grain smaller
added first steps for nvd3 charts