added czech language translate
minor optimization
repaired one very awfull syntax
remade extending of default options to be more readable
added === and !== where it should be, change typeof "undefined" to === undefined ...
updated Pointers
editors and people dont like long lines
editors and people dont like long lines No.2
just some optimizations
this.now removed -> allways same as this.clock and newer used
optimized calculation of SIDEREAL time
optimizations
Merge pull request #20 from Hinogary/master

cz lang + optimizations