A few dialogs' content is not resiable

[Sa'ar Zac Elias]

In a few dialog we have fixed width for content, so the dialog is resizable but the content size is never changed.
We need to make the content resizable (or cancel the resizing option of them).

• Spell checker (covered by #6829).
• Paste.
• Special characters.
• Select color.

[Garry Yao]

Unfortunately for "specialchar" and "color picker" due to grid(table) layout, a liquid layout is never achievable.

[Anna Tomanek]

Find and Replace dialog window with the resizing grip missing

[Anna Tomanek]

I don't know whether it's the same issue or not, but in v3.5 the Find and Replace dialog window is NOT resizable and does NOT contain the resizing grip icon.

[Sa'ar Zac Elias]

The resizing of the find/replace dialog was disabled, but unless anyone objects, the patch enables the resizing of this dialog.

[Garry Yao]

[6217] has been a misleading start to having those resizing logic boomed inside dialog codes, my intention is to have an 'onResize' handler introduced for each field in which we place the resize logic.

Note there's also another problem that v-resize looks meaningless at the moment, as for now table height doesn't stretch. I think we'd have to make that happen also.

[Garry Yao]

Patch enables vertical stretch in dialog

[Garry Yao]

A experimental patch to demonstrate vertical liquid layout, let's whether we could have it.