Remove unnecessary tests to delete

The delete operator can be called on a null pointer, so there's no
reason for these tests.
rtmp-stream:  Change TEST_FRAMEDROPS to just sleep

Instead of making the send buffer size super small, just do a sleep when
sending data to simulate the inability to send out as much data as
desired.
Add counting of total video frames to outputs

Before it would assign the encoder/media callbacks directly to the
output's callbacks, so instead of doing that, it now goes through
intermediary functions for the sake of counting the frames.
Add statistics functions to outputs

Total bytes, total frames, and frames dropped.  Total frames is
generated automatically, but total bytes and total dropped frames are
returned via callbacks.
rtmp-stream: Add statistics callbacks

Add callbacks for total bytes sent and number of dropped frames
Add function to main window to query CPU usage
Implement status bar

The status bar now displays:
 - Auto-reconnect information (reconnecting and reconnect success)
 - Dropped frames (as well as percentage of total video frames)
 - Duration of session
 - CPU usage of the program
 - Kbp/s

The OBSBasic class is getting a bit big, so I separated out the
status bar code to its own class derived from QStatusBar.
Merge pull request #141 from jp9000/status-bar

Implement Status bar
Move locale.ini to obs-studio base data directory

Being in with the other locale files causes a bit of confusion,
especially since the locale files will all be renamed to have .ini
extensions.
Rename locale extensions from .txt to .ini

Because we're using .ini format, the translation servies spit out files
with .ini extensions, so this makes it so we don't necessarily have to
rename those files from .ini to .txt before merging.
Change "kbp/s" to "kb/s"

As pointed out by da_coder
Simplify timestamp handling for mac-avcapture
Expand frame format support for mac-avcapture

Also add a fallback conversion via AVFoundation in case the native
format isn't supported
Remove AV_REV_FOURCC macro from mac-avcapture
Rename volume control if audio source renamed