Log Message:
Update to 2.3.4

Changelog:
2.3.4 (2018-08-21)
=========================

- Show all URL schemes in entry view [#1768]
- Disable merge when database is locked [#1975]
- Fix intermittent crashes with favorite icon downloads [#1980]
- Provide potential crash warning to Qt 5.5.x users [#2211]
- Disable apply button when creating new entry/group to prevent data loss [#2204]
- Allow for 12 hour timeout to lock idle database [#2173]
- Multiple SSH Agent fixes [#1981, #2117]
- Multiple Browser Integration enhancements [#1993, #2003, #2055, #2116, #2159, \ 
#2174, #2185]
- Fix browser proxy application not closing properly [#2142]
- Add real names and Patreon supporters to about dialog [#2214]
- Add settings button to toolbar, Donate button, and Report a Bug button to help \ 
menu [#2214]
- Enhancements to release-tool to appsign intermediate build products [#2101]