Gedit 3.10 Beta 1 Implements Regual Expression Search

Besides miscellaneous improvements and fixes, which are too insignificant to mention, Gedit 3.10 Beta 1 implements regual expression search, thanks to Sebastien Wilmet. Also, the following translations have been updated in this first Beta release of the upcoming Gedit 3.10 text editor: Czech, German, Hungarian, Italian, Brazilian Portuguese, Slovenian, Simplified Chinese, Traditional Chinese, Norwegian Bokmal, Hebrew, and Thai.