RTL direction jtable with rtl column resizable support added

[sheryever]

Resizable column support added for right to left direction languages like: Arabic, Urdu etc.

User just need to set a new option rtl: true table direction will be change and column resizing will also support RTL direction.

dev/jquery.jtable.dynamiccolumns.js, all required css and less files updated.

[hikalkan]

Thank you for the contribution. I'll review it soon.

[sheryever]

RTL column resizable direction optimized

The code is optimized. In last code of this file, I just created one extra chunk code to avoid any kind of code conflict.

In this commit the same code of jtable 2.4.0 is just tweaked to support rtl.

these line added.

            if (self.options.rtl) {
                self._$mainContainer.parent().attr('dir', "rtl");
            }

these line updated

                        var currentColumnNewWidth = (self.options.rtl ? self._currentResizeArgs.currentColumnStartWidth - mouseChangeX : self._currentResizeArgs.currentColumnStartWidth + mouseChangeX);
                        var currentColumnFinalWidth = self._normalizeNumber(columnNewWidth, self._currentResizeArgs.minWidth, self._currentResizeArgs.maxWidth)
                        //var currentColumnFinalWidth = self._normalizeNumber(self._currentResizeArgs.currentColumnStartWidth + mouseChangeX, self._currentResizeArgs.minWidth, self._currentResizeArgs.maxWidth);

[mohammed-alsiddeeq]

@hikalkan ٍ@sheryever wouldn't it be better if the rtl is automatically set?
i.e just checking if the dir html atttribute is set to rtl by using

 document.dir

then apply right to left specs

[sheryever]

@mosid in the start i was doing that but in my own application, there are some scenario where i need LTR jtable in RTL page.

But you can do something like $.hik.jtable.prototype.options.rtl = (document.dir == "rtl" ? true : false) in the first line of you javascript.

@hikalkan I am sorry. I want to close this pull request and create another pull request which will have the complete rtl css with one commit. this pull request only have column header css while there are some other elements which are required to be fixed. Header resizing also have a minor issue, that header resize limit is calculated from left column which is wrong.

Questing: Do i really need to fix the css in all css files in the github source code, while we have the less files in our code?

I will prefer the less file with a jtable_theme_base_rtl.less then include the file in jtable_theme_base.less.