[TYPO3-core] RFC feature #16393: date ranges for ExtJS date pickers

[Steffen Kamper]

Hi,

good addition!

Comments from reading:
* please use spaces with concatenate
* why adding '- ' at the end of classname? can be omitted and se a 
better reg exp
* please rename strmindate simply to matches
* js need initialization for vars. Start your modification with
var minDate = null, maxDate = null, matches = [];
Then you can omit the else parts

vg Steffen