Add a preference to increase the font size within the IM windows

Description

I had the UI magnified to 1.3 and still the font was too small within the communicate/IM windows. I magnified to 1.4 and it is okay, but I thought it would be a good idea to add a feature to increase just the font size, I wish I could make the font just a little bigger even on the 1.4 UI size.

Someone told me of a debug feature that allows changing font dpi, but a setting in preferences would be easier.

Environment

Singularity Viewer (64 bit) 1.8.7 (6994) Apr 9 2018 02:54:48 (Singularity Alpha)
Release Notes

Grid: Second Life

Built with MSVC version 1900

You are at 258030.0, 230952.2, 60.6 in Kandor (1007, 902) located at sim10776.agni.lindenlab.com (216.82.56.66:13004)
Second Life RC LeTigre 19.02.16.524516
Release Notes

CPU: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (2712 MHz)
Memory: 12174 MB
OS Version: Microsoft Windows 10 64-bit (Build 17763)
Graphics Card Vendor: NVIDIA Corporation
Graphics Card: GeForce 940MX/PCIe/SSE2
Windows Graphics Driver Version: 23.20.0016.4973
OpenGL Version: 4.6.0 NVIDIA 417.71
RLV Version: RLV v2.8.0 / RLVa v1.4.10a

libcurl Version: libcurl/7.48.0 OpenSSL/1.0.2g zlib/1.2.8 WinIDN
J2C Decoder Version: OpenJPEG: 1.5.2
Audio Driver Version: FMOD Studio 1.08.04
LLCEFLib/CEF Version: 1.6.0-(CEF-WIN-3.2526.1364)
Packets Lost: 43/51272 (0.1%)

Status

Assignee

Unassigned

Reporter

Mary Ellen Sager

Build Number

6994

External issue ID

None

Components

Priority

Medium
Configure