Hard-coded English text strings should be moved to their language files

I found most of view files and controllers were not localization-ready. So here's my little contribution to move hard-coded literal strings to language files. I think I've done only 10 percent of localization but I think I need to discuss my localization with other contributors.

* I created <code>form.php</code> language files to localize creation and edit forms.
* I think there are two many language files. Can't we just merge almost all <code>table.php</code>s and <code>form.php</code>s?
* But before we move on, there're some inconsistencies to be resolved. For example, I found these page titles: "Create Asset" vs "License Create", "Order Number" vs "Order No."
* Some models have validation rules like "alpha_space". I think this sould be removed or at least be replaced with regexp for non-English users. But I didn't work on this before I hear from you.

If you like my localization I'll continue to work more.