Minor improvements

* fixed broked at 1549110e5f2da2883893b153a3d3b451bdabc762 *class.dd*
* changed incorrect cast at "integer bit pattern" section of *type.dd*
* fixed old associative array `.sizeof` property at *arrays.dd* and *hash-map.dd*
* fixed old associative array word count example at *array.dd*
* used `++`,  `*=` and `+=` for D2 `array.length` at *array.dd* and *statement.dd*
* changed "In Out and Inout Parameters" to "In, Out and Ref Parameters" at *overview.dd*
* changed `next` to `popFront` etc. at *statement.dd*
Merge pull request #34 from jcd/master

Improve styling of booktables and add tag for linking to etc.c.* modules.
Merge pull request #33 from Trass3r/master

fix class.dd
new homepage
Merge branch 'new'
new homepage
Merge branch 'new'
Previous commit improvements
Merge pull request #37 from denis-sh/documentation-updates

Documentation updates and fixes
Merge branch 'master' of github.com:D-Programming-Language/d-programming-language.org
Show homepage examples without JS.
Converted "your code here" info from JS alert to prettier safe-for-nonjs div.
<nobr> -> CSS
fixed "leake" to "leaked"
fixed "leake" to "leaked"
Eliminate talk up of built-in complex numbers.
Eliminate talk up of built-in complex numbers.
add links, update license explanation
Added download page and fixed navigation
Hyphenation and justification