Fix window sizes and input field sizes for flat skin

Fixes layout issues mentioned in #378:
* change sizes of popup windows to match space required by flat skin for bandwith, eventdetails, events, filter, function, monitor, monitorpreset, options and user popups
* add focus() call to createPopup function: if the popup is already open but hidden behind other windows, bring it to the front
* change padding of select lists from 10 to 1 pixel to match other input fields
* give buttons a 1px top margin to keep buttons from sticking together in filter window

 ![image](https://cloud.githubusercontent.com/assets/6896360/2677356/26726a74-c150-11e3-97f0-d69d26f293e2.png)

* fix input elements with missing type attribute - these were rendered like type="text" but with a 10px padding. (on filter and zone views)